diff --git a/cv3/program.c b/cv3/program.c
index b4f975c..b36eec8 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -32,8 +32,8 @@ float calculator(float n1, float n2, char operation) {
         if (n2 != 0) {
             return n1 / n2;
         } else {
-            printf("Error: division by zero\n");
-            return 0;
+            printf("division by zero\n");
+            exit(1);
         }
     }
     return 0;