diff --git a/tests/plugins.c b/tests/plugins.c
index d3dc5cd..2258b18 100644
--- a/tests/plugins.c
+++ b/tests/plugins.c
@@ -22,6 +22,10 @@
 #include <dlfcn.h>
 #include "Browser/plugin.h"
 
+#ifndef PROGNAME
+# define PROGNAME	"plugins"
+#endif
+
 
 /* private */
 /* prototypes */
@@ -90,7 +94,7 @@ static int _plugins(void)
 /* dlerror */
 static int _dlerror(char const * message, int ret)
 {
-	fputs("plugins: ", stderr);
+	fputs(PROGNAME ": ", stderr);
 	fprintf(stderr, "%s: %s\n", message, dlerror());
 	return ret;
 }
@@ -99,7 +103,7 @@ static int _dlerror(char const * message, int ret)
 /* error */
 static int _error(char const * message, char const * error, int ret)
 {
-	fputs("plugins: ", stderr);
+	fputs(PROGNAME ": ", stderr);
 	fprintf(stderr, "%s: %s\n", message, error);
 	return ret;
 }
@@ -108,7 +112,7 @@ static int _error(char const * message, char const * error, int ret)
 /* perror */
 static int _perror(char const * message, int ret)
 {
-	fputs("plugins: ", stderr);
+	fputs(PROGNAME ": ", stderr);
 	perror(message);
 	return ret;
 }
diff --git a/tests/vfs.c b/tests/vfs.c
index 06e4686..5182283 100644
--- a/tests/vfs.c
+++ b/tests/vfs.c
@@ -23,6 +23,10 @@
 #include <Desktop/mime.h>
 #include "Browser/vfs.h"
 
+#ifndef PROGNAME
+# define PROGNAME	"vfs"
+#endif
+
 
 /* vfs */
 static int _vfs(void)
@@ -51,7 +55,7 @@ static int _vfs(void)
 /* usage */
 static int _usage(void)
 {
-	fputs("Usage: vfs\n", stderr);
+	fputs("Usage: " PROGNAME "\n", stderr);
 	return 1;
 }