diff --git a/src/ar65/library.c b/src/ar65/library.c
index d92b8b255..94ae219c3 100644
--- a/src/ar65/library.c
+++ b/src/ar65/library.c
@@ -70,7 +70,8 @@ static const char*	LibName = 0;
 /* The library header */
 static LibHeader       	Header = {
     LIB_MAGIC,
-    LIB_VERSION
+    LIB_VERSION,
+    0, 0
 };
 
 
diff --git a/src/ar65/main.c b/src/ar65/main.c
index f098c8cb3..7a2a9ca62 100644
--- a/src/ar65/main.c
+++ b/src/ar65/main.c
@@ -77,7 +77,7 @@ static void Usage (void)
 int main (int argc, char* argv [])
 /* Assembler main program */
 {
-    int I;
+    unsigned I;
 
     /* Initialize the cmdline module */
     InitCmdLine (&argc, &argv, "ar65");
diff --git a/src/ar65/make/gcc.mak b/src/ar65/make/gcc.mak
index 2ea88dd24..4a5b018ad 100644
--- a/src/ar65/make/gcc.mak
+++ b/src/ar65/make/gcc.mak
@@ -5,7 +5,7 @@
 # Library dir
 COMMON	= ../common
 
-CFLAGS 	= -g -O2 -Wall -I$(COMMON)
+CFLAGS 	= -g -O2 -Wall -W -I$(COMMON)
 CC	= gcc
 EBIND	= emxbind
 LDFLAGS	=