@@ -179,11 +179,11 @@
 	#define param "\x1b[32m"
 	#define eol   "\x1b[m\n"
 	#define bold  "\x1b[1m"
 	#define nl    "       "
-	fprintf(stderr, bold "usage:\x1b[0m %s    "       "     " info "kill active window if non-vital" eol
+	fprintf(stderr, bold "usage:\x1b[0m %1$s    "       "     " info "kill active window if non-vital" eol
 						 nl "%1$s -v " param "[id] " info "make [id] or active window vital" eol
 						 nl "%1$s -c " param "[id] " info "clear vital flag on [id] or active window" eol
 						 nl "%1$s -q " param "[id] " info "'emergency' kill w/o reference to vital flag" eol,
 				argv[0]);
 	return 1;
 }