diff -Naur WaveGain-1.3.1/misc.c WaveGain-1.3.1-p/misc.c
--- WaveGain-1.3.1/misc.c	2006-06-04 22:47:36.000000000 +0200
+++ WaveGain-1.3.1-p/misc.c	2019-06-07 10:56:35.064902071 +0200
@@ -39,7 +39,7 @@
 	vfprintf(stderr, message, args);
 	va_end(args);
 
-	fprintf(stderr, strerror(err_num));
+	fprintf(stderr, "%s", strerror(err_num));
 	fprintf(stderr, "\n");
 }