diff --git a/du3/program.c b/du3/program.c
index 3c9b20e..48cd434 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -72,8 +72,8 @@ int main(void) {
         } else if (strlen(line) == 1 && strchr("+-*/", line[0])) {
             //operacia
             if (s.size < 2) {
-                printf("Chyba: nedostatok operandov.\n");
-                return 1;
+                printf("not enough operands\n");
+                return 0;
             }
             float b = pop_stack(&s);
             float a = pop_stack(&s);
@@ -91,7 +91,7 @@ int main(void) {
                     result = a / b; break;
                 default:
                     printf("Chyba: neznama operacia.\n");
-                    return 1;
+                    return 0;
             }
             push_stack(&s, result);
         } else {