diff --git a/tools/png2fimg.c b/tools/png2fimg.c
index c3f42178..e11eba18 100644
--- a/tools/png2fimg.c
+++ b/tools/png2fimg.c
@@ -19,7 +19,7 @@ int		foo;
 
 if (3 != argc) {
 	fimg_print_version(1);
-	fprintf(stderr, "usage:\n\t%s foo.png bar.png\n", argv[0]);
+	fprintf(stderr, "usage:\n\t%s foo.png bar.fimg\n", argv[0]);
 	exit(1);
 	}