diff --git a/include/log.h b/include/log.h
index a120e46..743882f 100644
--- a/include/log.h
+++ b/include/log.h
@@ -28,9 +28,6 @@ extern void log_write(int, const char *, ...);
  * Here we have a couple of convenience macros that abstracts the log
  * level number.
  */
-#define log_critical(...) log_write(0, __VA_ARGS__)
-#define log_error(...) log_write(0, __VA_ARGS__)
-
 #define log_alert(...) log_write(LOG_ALERT, __VA_ARGS__)
 #define log_crit(...) log_write(LOG_CRIT, __VA_ARGS__)
 #define log_debug(...) log_write(LOG_DEBUG, __VA_ARGS__)
diff --git a/src/apple2.c b/src/apple2.c
index d4e84f0..3c4237b 100644
--- a/src/apple2.c
+++ b/src/apple2.c
@@ -80,14 +80,14 @@ apple2_create(int width, int height)
 
     mach->main = vm_segment_create(APPLE2_MEMORY_SIZE);
     if (mach->main == NULL) {
-        log_critical("Could not initialize main RAM!");
+        log_crit("Could not initialize main RAM!");
         apple2_free(mach);
         return NULL;
     }
 
     mach->cpu = mos6502_create(mach->main, mach->main);
     if (mach->cpu == NULL) {
-        log_critical("Could not create CPU!");
+        log_crit("Could not create CPU!");
         apple2_free(mach);
         return NULL;
     }
@@ -96,7 +96,7 @@ apple2_create(int width, int height)
     mach->rom = vm_segment_create(APPLE2_ROM_SIZE);
     mach->aux = vm_segment_create(APPLE2_MEMORY_SIZE);
     if (mach->rom == NULL || mach->aux == NULL) {
-        log_critical("Could not initialize ROM / AUX!");
+        log_crit("Could not initialize ROM / AUX!");
         apple2_free(mach);
         return NULL;
     }
@@ -106,7 +106,7 @@ apple2_create(int width, int height)
     apple2_mem_map(mach, mach->aux);
 
     if (apple2_mem_init_sys_rom(mach) != OK) {
-        log_critical("Could not initialize apple2 ROM");
+        log_crit("Could not initialize apple2 ROM");
         apple2_free(mach);
         return NULL;
     }
@@ -117,7 +117,7 @@ apple2_create(int width, int height)
     mach->drive2 = apple2_dd_create();
 
     if (mach->drive1 == NULL || mach->drive2 == NULL) {
-        log_critical("Could not create disk drives!");
+        log_crit("Could not create disk drives!");
         apple2_free(mach);
         return NULL;
     }
@@ -128,7 +128,7 @@ apple2_create(int width, int height)
     // Let's build our screen abstraction!
     mach->screen = vm_screen_create();
     if (mach->screen == NULL) {
-        log_critical("Screen creation failed!");
+        log_crit("Screen creation failed!");
         apple2_free(mach);
         return NULL;
     }
@@ -137,7 +137,7 @@ apple2_create(int width, int height)
     // graphics.
     err = vm_screen_add_window(mach->screen, width, height);
     if (err != OK) {
-        log_critical("Window creation failed!");
+        log_crit("Window creation failed!");
         apple2_free(mach);
         return NULL;
     }
@@ -161,7 +161,7 @@ apple2_create(int width, int height)
                                       0x7f);
     if (mach->sysfont == NULL || mach->invfont == NULL) {
         apple2_free(mach);
-        log_critical("Could not initialize apple2: bad font");
+        log_crit("Could not initialize apple2: bad font");
         return NULL;
     }
 
@@ -239,7 +239,7 @@ apple2_boot(apple2 *mach)
     if (stream) {
         err = apple2_dd_insert(mach->drive1, stream, DD_DOS33);
         if (err != OK) {
-            log_critical("Unable to insert disk1 into drive");
+            log_crit("Unable to insert disk1 into drive");
             return err;
         }
     }
@@ -248,7 +248,7 @@ apple2_boot(apple2 *mach)
     if (stream) {
         err = apple2_dd_insert(mach->drive2, stream, DD_DOS33);
         if (err != OK) {
-            log_critical("Unable to insert disk2 into drive");
+            log_crit("Unable to insert disk2 into drive");
             return err;
         }
     }
diff --git a/src/apple2.dd.c b/src/apple2.dd.c
index 6ddb492..d138f13 100644
--- a/src/apple2.dd.c
+++ b/src/apple2.dd.c
@@ -30,7 +30,7 @@ apple2_dd_create()
 
     drive = malloc(sizeof(apple2dd));
     if (drive == NULL) {
-        log_critical("Could not malloc space for apple2 disk drive");
+        log_crit("Could not malloc space for apple2 disk drive");
         return NULL;
     }
 
@@ -120,18 +120,18 @@ apple2_dd_insert(apple2dd *drive, FILE *stream, int type)
     int err;
 
     if (stream == NULL) {
-        log_critical("File stream is null");
+        log_crit("File stream is null");
         return ERR_BADFILE;
     }
 
     // How large is this data set? Let's get the stat info.
     if (fstat(fileno(stream), &finfo)) {
-        log_critical("Couldn't inspect file stream: %s", strerror(errno));
+        log_crit("Couldn't inspect file stream: %s", strerror(errno));
         return ERR_BADFILE;
     }
 
     if (finfo.st_size != _140K_) {
-        log_critical("Unexpected file format (file size = %d)", finfo.st_size);
+        log_crit("Unexpected file format (file size = %d)", finfo.st_size);
         return ERR_BADFILE;
     }
 
@@ -145,7 +145,7 @@ apple2_dd_insert(apple2dd *drive, FILE *stream, int type)
     // Read the data from the stream and write into the memory segment
     err = vm_segment_fread(drive->image, stream, 0, finfo.st_size);
     if (err != OK) {
-        log_critical("Could not read data into disk drive");
+        log_crit("Could not read data into disk drive");
         return err;
     }
 
@@ -177,7 +177,7 @@ apple2_dd_encode(apple2dd *drive)
             break;
 
         default:
-            log_critical("Unknown image type");
+            log_crit("Unknown image type");
             return ERR_INVALID;
     }
 
@@ -220,7 +220,7 @@ apple2_dd_decode(apple2dd *drive)
             break;
 
         default:
-            log_critical("Unknown image type");
+            log_crit("Unknown image type");
             return ERR_INVALID;
     }
 
diff --git a/src/apple2.mem.c b/src/apple2.mem.c
index 0b54f45..1d9ac1d 100644
--- a/src/apple2.mem.c
+++ b/src/apple2.mem.c
@@ -110,7 +110,7 @@ apple2_mem_init_sys_rom(apple2 *mach)
     err = vm_segment_copy_buf(mach->rom, sysrom, 
                               0, 0, APPLE2_SYSROM_SIZE);
     if (err != OK) {
-        log_critical("Could not copy apple2 system rom");
+        log_crit("Could not copy apple2 system rom");
         return ERR_BADFILE;
     }
 
@@ -118,7 +118,7 @@ apple2_mem_init_sys_rom(apple2 *mach)
                               APPLE2_SYSROM_SIZE, 0, 
                               APPLE2_PERIPHERAL_SIZE);
     if (err != OK) {
-        log_critical("Could not copy apple2 peripheral rom");
+        log_crit("Could not copy apple2 peripheral rom");
         return ERR_BADFILE;
     }
 
diff --git a/src/mos6502.c b/src/mos6502.c
index cc785e9..a45606d 100644
--- a/src/mos6502.c
+++ b/src/mos6502.c
@@ -164,7 +164,7 @@ mos6502_create(vm_segment *rmem, vm_segment *wmem)
    
     cpu = malloc(sizeof(mos6502));
     if (cpu == NULL) {
-        log_critical("Not enough memory to allocate mos6502");
+        log_crit("Not enough memory to allocate mos6502");
         exit(1);
     }
 
diff --git a/src/mos6502.exec.c b/src/mos6502.exec.c
index 15ee2a7..4d137f1 100644
--- a/src/mos6502.exec.c
+++ b/src/mos6502.exec.c
@@ -17,7 +17,7 @@
  */
 DEFINE_INST(bad)
 {
-    log_critical("Invalid instruction: %2x @ %4x",
+    log_crit("Invalid instruction: %2x @ %4x",
                   mos6502_get(cpu, cpu->PC), cpu->PC);
     exit(1);
 }
diff --git a/src/objstore.c b/src/objstore.c
index 0eab91f..8093273 100644
--- a/src/objstore.c
+++ b/src/objstore.c
@@ -49,7 +49,7 @@ objstore_init()
 
     // If the copy didn't work out somehow...
     if (!objstore_ready()) {
-        log_critical("Object store initialization failed with bad data");
+        log_crit("Object store initialization failed with bad data");
         return ERR_BADFILE;
     }
 
diff --git a/src/vm_bitfont.c b/src/vm_bitfont.c
index e9f0401..cbaa9f6 100644
--- a/src/vm_bitfont.c
+++ b/src/vm_bitfont.c
@@ -39,7 +39,7 @@ vm_bitfont_create(vm_screen *screen,
     // function.
     rw = SDL_RWFromConstMem(fontdata, fontsize);
     if (rw == NULL) {
-        log_critical("Failed to create RWops from font data: %s", 
+        log_crit("Failed to create RWops from font data: %s", 
                      SDL_GetError());
         return NULL;
     }
@@ -48,14 +48,14 @@ vm_bitfont_create(vm_screen *screen,
     // of getting a bitmap from memory rather than loading from a file.
     surf = SDL_LoadBMP_RW(rw, 0);
     if (surf == NULL) {
-        log_critical("Failed to create bitmap from RWops: %s",
+        log_crit("Failed to create bitmap from RWops: %s",
                      SDL_GetError());
         return NULL;
     }
 
     font = malloc(sizeof(vm_bitfont));
     if (font == NULL) {
-        log_critical("Could not allocate memory for font");
+        log_crit("Could not allocate memory for font");
         return NULL;
     }
 
@@ -131,7 +131,7 @@ vm_bitfont_render(vm_bitfont *font,
         if (SDL_RenderCopy(screen->render, font->texture, 
                            &src_rect, &dest_rect) < 0
            ) {
-            log_critical("Failed to render glyph: %s", SDL_GetError());
+            log_crit("Failed to render glyph: %s", SDL_GetError());
             return ERR_GFXOP;
         }
     }
diff --git a/src/vm_reflect.c b/src/vm_reflect.c
index 1617474..f7bce27 100644
--- a/src/vm_reflect.c
+++ b/src/vm_reflect.c
@@ -23,7 +23,7 @@ vm_reflect_create()
 
     ref = malloc(sizeof(vm_reflect));
     if (ref == NULL) {
-        log_critical("Could not allocate memory for vm_reflect");
+        log_crit("Could not allocate memory for vm_reflect");
         return NULL;
     }
 
diff --git a/src/vm_screen.c b/src/vm_screen.c
index 7ea3367..808c4f5 100644
--- a/src/vm_screen.c
+++ b/src/vm_screen.c
@@ -28,7 +28,7 @@ int
 vm_screen_init()
 {
     if (SDL_Init(SDL_INIT_VIDEO) < 0) {
-        log_critical("Could not initialize video: %s", SDL_GetError());
+        log_crit("Could not initialize video: %s", SDL_GetError());
         return ERR_GFXINIT;
     }
 
@@ -59,7 +59,7 @@ vm_screen_create()
 
     screen = (vm_screen *)malloc(sizeof(vm_screen));
     if (screen == NULL) {
-        log_critical("Failed to allocate vm_screen");
+        log_crit("Failed to allocate vm_screen");
         exit(1);
     }
 
@@ -114,7 +114,7 @@ vm_screen_add_window(vm_screen *screen, int width, int height)
         width, height, 0, &screen->window, &screen->render);
 
     if (screen->window == NULL || screen->render == NULL) {
-        log_critical("Could not create window: %s", SDL_GetError());
+        log_crit("Could not create window: %s", SDL_GetError());
         return ERR_GFXINIT;
     }
 #endif
diff --git a/src/vm_segment.c b/src/vm_segment.c
index 74abe47..fadc7d0 100644
--- a/src/vm_segment.c
+++ b/src/vm_segment.c
@@ -41,14 +41,14 @@ vm_segment_create(size_t size)
 
     // Ack! We couldn't get the memory we wanted. Let's bail.
     if (segment == NULL) {
-        log_critical("Couldn't allocate enough space for vm_segment");
+        log_crit("Couldn't allocate enough space for vm_segment");
         return NULL;
     }
 
     segment->memory = malloc(sizeof(vm_8bit) * size);
     if (segment->memory == NULL) {
         free(segment);
-        log_critical("Couldn't allocate enough space for vm_segment");
+        log_crit("Couldn't allocate enough space for vm_segment");
         return NULL;
     }
 
@@ -58,14 +58,14 @@ vm_segment_create(size_t size)
 
     segment->read_table = malloc(sizeof(vm_segment_read_fn) * size);
     if (segment->read_table == NULL) {
-        log_critical("Couldn't allocate enough space for segment read_table");
+        log_crit("Couldn't allocate enough space for segment read_table");
         vm_segment_free(segment);
         return NULL;
     }
 
     segment->write_table = malloc(sizeof(vm_segment_write_fn) * size);
     if (segment->write_table == NULL) {
-        log_critical("Couldn't allocate enough space for segment write_table");
+        log_crit("Couldn't allocate enough space for segment write_table");
         vm_segment_free(segment);
         return NULL;
     }
@@ -103,7 +103,7 @@ vm_segment_set(vm_segment *segment, size_t index, vm_8bit value)
 {
     // Some bounds checking.
     if (!vm_segment_bounds_check(segment, index)) {
-        log_critical(
+        log_crit(
             "Attempt to set segment index (%d) greater than bounds (%d)",
             index,
             segment->size);
@@ -130,7 +130,7 @@ vm_8bit
 vm_segment_get(vm_segment *segment, size_t index)
 {
     if (!vm_segment_bounds_check(segment, index)) {
-        log_critical(
+        log_crit(
             "Attempt to get segment index (%d) greater than bounds (%d)",
             index,
             segment->size);
@@ -178,7 +178,7 @@ vm_segment_copy(vm_segment *dest,
             size_t length)
 {
     if (src_index + length > src->size) {
-        log_critical(
+        log_crit(
             "Attempt to copy beyond bounds of vm_segment (%d + %d >= %d)",
             src_index,
             length,
@@ -188,7 +188,7 @@ vm_segment_copy(vm_segment *dest,
     }
 
     if (dest_index + length > dest->size) {
-        log_critical(
+        log_crit(
             "Attempt to copy beyond bounds of vm_segment (%d + %d >= %d)",
             dest_index,
             length,
@@ -216,7 +216,7 @@ vm_segment_copy_buf(vm_segment *dest, const vm_8bit *src,
                     size_t destoff, size_t srcoff, size_t len)
 {
     if (destoff + len > dest->size) {
-        log_critical("Attempt to copy buffer out of bounds (%d + %d >= %d)",
+        log_crit("Attempt to copy buffer out of bounds (%d + %d >= %d)",
                      destoff, len, dest->size);
         return ERR_OOB;
     }
@@ -280,7 +280,7 @@ vm_segment_fread(vm_segment *segment, FILE *stream, size_t offset, size_t len)
     // count on just that to tell us something went wrong (especially if
     // len was not a valid length for the file to begin with).
     if (ferror(stream)) {
-        log_critical("Could not read file stream: %s\n", strerror(errno));
+        log_crit("Could not read file stream: %s\n", strerror(errno));
         return ERR_BADFILE;
     }
 
@@ -298,7 +298,7 @@ vm_segment_fwrite(vm_segment *seg, FILE *stream, size_t off, size_t len)
     fwrite(seg->memory + off, sizeof(vm_8bit), len, stream);
 
     if (ferror(stream)) {
-        log_critical("Could not write to the file stream: %s", strerror(errno));
+        log_crit("Could not write to the file stream: %s", strerror(errno));
         return ERR_BADFILE;
     }