diff --git a/cv3/program.c b/cv3/program.c
index 71bb2a8..96fe5ea 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -105,7 +105,7 @@ int main() {
             }
         } else {
             printf("bad input\n");
-            return 1;
+            return 0;
         }
     }