diff --git a/du3/program.c b/du3/program.c
index 4882b3a..26bd05f 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -50,7 +50,7 @@ int main() {
         buffer[strcspn(buffer, "\n")] = '\0';
         if (strlen(buffer) == 0) {
             printf("no input\n");
-            return 1;
+            return 0;
         }
 
         if (sscanf(buffer, "%f", &new) == 1) {  //спроба прочитати число
@@ -78,7 +78,7 @@ int main() {
             print_stack(&mystack);
         } else {
             printf("bad input\n");
-            return 1;
+            return 0;
         }
     }
     printf("no input\n");