--- linux-atm-2.5.1-orig/src/test/ttcp.c	2017-05-28 12:16:24.984611487 +0000
+++ linux-atm-2.5.1/src/test/ttcp.c	2017-05-28 12:17:25.370338343 +0000
@@ -663,7 +663,7 @@ int no_check = 0;
     exit(0);
 
   usage:
-    fprintf(stderr, Usage);
+    fprintf(stderr, "%s", Usage);
     exit(1);
 }