diff --git a/du3/program.c b/du3/program.c
index 1020523..8ebc785 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -61,7 +61,7 @@ void process_operations(struct stack* stack) {
                 push_stack(stack, res);
                 print_stack(stack);
             } else {
-                printf("bad input\n");
+                printf("not enough operands\n");
                 return;
             }
         } else {