diff --git a/cv3/program.c b/cv3/program.c
index 2c0c57d..5a8464a 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -50,7 +50,7 @@ int operation_insert_result(struct stack_glavny* stack, char operation) {
                 break;
             case '/':
                 if (operand2 == 0) {
-                    //printf("division by zero\n");
+                    printf("division by zero\n");
                     return false;
                 }
                 result = operand1 / operand2;