diff --git a/libsrc/common/_printf.h b/libsrc/common/_printf.h
index 6ce43439a..aa5802f03 100644
--- a/libsrc/common/_printf.h
+++ b/libsrc/common/_printf.h
@@ -16,7 +16,7 @@
 struct outdesc;
 
 /* Type of the function that is called to output data */
-typedef void (*outfunc) (struct outdesc* desc, char* buf, unsigned count);
+typedef void (*outfunc) (struct outdesc* desc, const char* buf, unsigned count);
 
 
 
diff --git a/libsrc/common/locale.c b/libsrc/common/locale.c
index 5c084a2d0..efb055cb5 100644
--- a/libsrc/common/locale.c
+++ b/libsrc/common/locale.c
@@ -18,9 +18,9 @@
 
 
 /* For memory efficiency use a separate empty string */
-static const char EmptyString [] = "";
+static char EmptyString [] = "";
 
-static const struct lconv lc = {
+static struct lconv lc = {
     EmptyString,   	/* currency_symbol */
     ".",		/* decimal_point */
     EmptyString,   	/* grouping */
diff --git a/libsrc/common/vcprintf.c b/libsrc/common/vcprintf.c
index 4b54cdbdc..64d0e5c96 100644
--- a/libsrc/common/vcprintf.c
+++ b/libsrc/common/vcprintf.c
@@ -12,7 +12,7 @@
 
 
 
-static void out (struct outdesc* d, char* buf, unsigned count)
+static void out (struct outdesc* d, const char* buf, unsigned count)
 /* Routine used for writing */
 {
     /* Fast screen output */
diff --git a/libsrc/common/vfprintf.c b/libsrc/common/vfprintf.c
index f33c9c47e..17596b5d2 100644
--- a/libsrc/common/vfprintf.c
+++ b/libsrc/common/vfprintf.c
@@ -12,7 +12,7 @@
 
 
 
-static void out (struct outdesc* d, char* buf, unsigned count)
+static void out (struct outdesc* d, const char* buf, unsigned count)
 /* Routine used for writing */
 {
     /* Write to the file */
@@ -42,4 +42,4 @@ int vfprintf (FILE* f, const char* format, va_list ap)
 
 
 
-			     
+
diff --git a/libsrc/common/vsprintf.c b/libsrc/common/vsprintf.c
index 9b55da9c0..6c892d94b 100644
--- a/libsrc/common/vsprintf.c
+++ b/libsrc/common/vsprintf.c
@@ -12,7 +12,7 @@
 
 
 
-static void out (struct outdesc* d, char* buf, unsigned count)
+static void out (struct outdesc* d, const char* buf, unsigned count)
 /* Routine used for writing */
 {
     /* String - be shure to check the size */