diff --git a/du3/program.c b/du3/program.c
index ca8ba70..40c6ccd 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -25,7 +25,7 @@ int push_stack(struct stack* s, float znac) {
 
 int pop_stack(struct stack* s, float* out) {
     if (s->size < 1) {
-        printf("stack underflow\n");
+        printf("not enough operands\n");
         return 0;
     }
     *out = s->values[--s->size]; //зменшуємо розмір стеку