diff --git a/du3/program.c b/du3/program.c
index ea2c331..60e2200 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -22,7 +22,7 @@ int main(void) {
 
         if (*koniec == '\0') {
             if (top >= SIZE) {
-                printf("stack full\n");
+                printf("full stack\n");
                 return 0;
             }
             ulozisko[top++] = cislo;