diff --git a/du5/program.c b/du5/program.c
index 85e7e63..cc81817 100644
--- a/du5/program.c
+++ b/du5/program.c
@@ -68,7 +68,7 @@ void run_system(struct Node* node) {
 int main(void) {
     struct Node* root = read_tree();
     if (root == NULL) {
-        printf("Error: failed to load the rule base.\n");
+        printf("Chybna databaza\n");
         return 1;
     }
     char sep[SIZE];