diff --git a/src/asm/main.c b/src/asm/main.c
index 8423c029..ef7155a3 100644
--- a/src/asm/main.c
+++ b/src/asm/main.c
@@ -20,8 +20,6 @@ int cldefines_index;
 int cldefines_size;
 char **cldefines;
 
-char *progname;
-
 clock_t nStartClock, nEndClock;
 SLONG nLineNo;
 ULONG nTotalLines, nPass, nPC, nIFDepth, nErrors;
@@ -301,8 +299,6 @@ main(int argc, char *argv[])
 	if (argc == 1)
 		usage();
 
-	progname = "rgbasm";
-
 	/* yydebug=1; */
 
 	DefaultOptions.gbgfx[0] = '0';
diff --git a/src/extern/err.c b/src/extern/err.c
index bfeced2b..77c653e0 100644
--- a/src/extern/err.c
+++ b/src/extern/err.c
@@ -26,11 +26,9 @@
 #include <stdlib.h>
 #include "extern/err.h"
 
-extern char *progname;
-
 void rgbds_vwarn(const char *fmt, va_list ap)
 {
-	fprintf (stderr, "%s: warning", progname);
+	fprintf (stderr, "warning");
 	if (fmt) {
 		fputs (": ", stderr);
 		vfprintf(stderr, fmt, ap);
@@ -41,7 +39,7 @@ void rgbds_vwarn(const char *fmt, va_list ap)
 
 void rgbds_vwarnx(const char *fmt, va_list ap)
 {
-	fprintf (stderr, "%s: warning", progname);
+	fprintf (stderr, "warning");
 	if (fmt) {
 		fputs (": ", stderr);
 		vfprintf(stderr, fmt, ap);
@@ -51,7 +49,7 @@ void rgbds_vwarnx(const char *fmt, va_list ap)
 
 noreturn void rgbds_verr(int status, const char *fmt, va_list ap)
 {
-	fprintf (stderr, "%s: error", progname);
+	fprintf (stderr, "error");
 	if (fmt) {
 		fputs (": ", stderr);
 		vfprintf(stderr, fmt, ap);
@@ -62,7 +60,7 @@ noreturn void rgbds_verr(int status, const char *fmt, va_list ap)
 
 noreturn void rgbds_verrx(int status, const char *fmt, va_list ap)
 {
-	fprintf (stderr, "%s: error", progname);
+	fprintf (stderr, "error");
         if (fmt) {
                 fputs (": ", stderr);
                 vfprintf(stderr, fmt, ap);
diff --git a/src/fix/main.c b/src/fix/main.c
index 26d33877..f634ce57 100644
--- a/src/fix/main.c
+++ b/src/fix/main.c
@@ -23,8 +23,6 @@
 
 #include "extern/err.h"
 
-char *progname;
-
 static void
 usage(void)
 {
@@ -71,8 +69,6 @@ main(int argc, char *argv[])
 	int version;   /* mask ROM version number */
 	int padvalue;  /* to pad the rom with if it changes size */
 
-	progname = "rgbfix";
-
 	while ((ch = getopt(argc, argv, "Cci:jk:l:m:n:p:sr:t:v")) != -1) {
 		switch (ch) {
 		case 'C':
diff --git a/src/gfx/main.c b/src/gfx/main.c
index fac25d5d..cc8bca2a 100644
--- a/src/gfx/main.c
+++ b/src/gfx/main.c
@@ -19,8 +19,6 @@
 #include <string.h>
 #include "gfx/main.h"
 
-char *progname;
-
 static void
 usage(void)
 {
@@ -41,8 +39,6 @@ main(int argc, char *argv[])
 	char *ext;
 	const char *errmsg = "Warning: The PNG's %s setting is not the same as the setting defined on the command line.";
 
-	progname = "rgbgfx";
-
 	if (argc == 1) {
 		usage();
 	}
diff --git a/src/link/main.c b/src/link/main.c
index d602f77f..c24d0f6b 100644
--- a/src/link/main.c
+++ b/src/link/main.c
@@ -24,8 +24,6 @@ SLONG options = 0;
 SLONG fillchar = 0;
 char *smartlinkstartsymbol;
 
-char *progname;
-
 /*
  * Print the usagescreen
  *
@@ -54,8 +52,6 @@ main(int argc, char *argv[])
 	if (argc == 1)
 		usage();
 
-	progname = "rgblink";
-
 	while ((ch = getopt(argc, argv, "l:m:n:o:O:p:s:tw")) != -1) {
 		switch (ch) {
 		case 'l':
diff --git a/test/asm/undefined-dot.out b/test/asm/undefined-dot.out
index e1e4ffb6..c1966e4b 100644
--- a/test/asm/undefined-dot.out
+++ b/test/asm/undefined-dot.out
@@ -1,3 +1,3 @@
 ERROR: undefined-dot.asm(3):
 	'.' not defined
-rgbasm: error: Assembly aborted in pass 2 (1 errors)!
+error: Assembly aborted in pass 2 (1 errors)!
diff --git a/test/link/romx-tiny-no-t.out b/test/link/romx-tiny-no-t.out
index 700b9a74..dabf2904 100644
--- a/test/link/romx-tiny-no-t.out
+++ b/test/link/romx-tiny-no-t.out
@@ -1 +1 @@
-rgblink: error: Unable to place 'r0b' (ROM0 section) anywhere
+error: Unable to place 'r0b' (ROM0 section) anywhere
diff --git a/test/link/romx-tiny-t.out b/test/link/romx-tiny-t.out
index e8fa3e82..ef714e24 100644
--- a/test/link/romx-tiny-t.out
+++ b/test/link/romx-tiny-t.out
@@ -1 +1 @@
-rgblink: error: ROMX sections can't be used with option -t.
+error: ROMX sections can't be used with option -t.
diff --git a/test/link/vram-fixed-dmg-mode-w.out b/test/link/vram-fixed-dmg-mode-w.out
index 277c6954..1ed998ce 100644
--- a/test/link/vram-fixed-dmg-mode-w.out
+++ b/test/link/vram-fixed-dmg-mode-w.out
@@ -1 +1 @@
-rgblink: error: VRAM bank 1 can't be used with option -w.
+error: VRAM bank 1 can't be used with option -w.
diff --git a/test/link/vram-floating-dmg-mode-w.out b/test/link/vram-floating-dmg-mode-w.out
index 31ad1d17..4367a910 100644
--- a/test/link/vram-floating-dmg-mode-w.out
+++ b/test/link/vram-floating-dmg-mode-w.out
@@ -1 +1 @@
-rgblink: error: Unable to place 'v1' (VRAM section) in any bank
+error: Unable to place 'v1' (VRAM section) in any bank
diff --git a/test/link/wramx-dmg-mode-no-w.out b/test/link/wramx-dmg-mode-no-w.out
index 8f5a6dd3..dab00306 100644
--- a/test/link/wramx-dmg-mode-no-w.out
+++ b/test/link/wramx-dmg-mode-no-w.out
@@ -1 +1 @@
-rgblink: error: Unable to place 'w0b' (WRAM0 section) anywhere
+error: Unable to place 'w0b' (WRAM0 section) anywhere
diff --git a/test/link/wramx-dmg-mode-w.out b/test/link/wramx-dmg-mode-w.out
index 4317b2d4..8ca11a50 100644
--- a/test/link/wramx-dmg-mode-w.out
+++ b/test/link/wramx-dmg-mode-w.out
@@ -1 +1 @@
-rgblink: error: WRAMX sections can't be used with option -w.
+error: WRAMX sections can't be used with option -w.