diff --git a/src/tube.c b/src/tube.c
index 424cf17..be0a586 100755
--- a/src/tube.c
+++ b/src/tube.c
@@ -300,7 +300,7 @@ void tube_init(int argc, char* argv[])
         }
 
         if ((strcmp(argv[firstArg],"-h") == 0) || (strcmp(argv[firstArg],"--help") == 0)){
-                printf(helpStr);
+                printf("%s",helpStr);
                 exit(0);
         }