diff -Naur --exclude '*~' rpc2-2.8/rpc2-src/rpc2test.c rpc2-2.8-fix-format-errors/rpc2-src/rpc2test.c
--- rpc2-2.8/rpc2-src/rpc2test.c	2008-08-08 19:42:04.000000000 +0200
+++ rpc2-2.8-fix-format-errors/rpc2-src/rpc2test.c	2009-03-05 22:53:58.000000000 +0100
@@ -908,14 +908,14 @@
 {
     char LineBuf[100];
 
-    if (isatty(fileno(stdin))) printf(gPrompt);
+    if (isatty(fileno(stdin))) printf("%s", gPrompt);
     fgets(LineBuf, sizeof(LineBuf), stdin); *gVar = atoi(LineBuf);
     if (!isatty(fileno(stdin))) printf( "%s%ld\n", gPrompt, *gVar);
 }
 
 static void GetStringVar(char *gSVar, char *gPrompt)
 {
-    if (isatty(fileno(stdin))) printf(gPrompt);
+    if (isatty(fileno(stdin))) printf("%s", gPrompt);
     fgets(gSVar, sizeof(gSVar), stdin);
     *(gSVar + strlen(gSVar)) = 0;
     if (!isatty(fileno(stdin))) printf( "%s%s\n", gPrompt, gSVar);