diff --git a/du6/program.c b/du6/program.c
index 52d373c..483a800 100644
--- a/du6/program.c
+++ b/du6/program.c
@@ -49,13 +49,13 @@ void spusti_system(Uzol* root) {
         }
         char c;
         if (scanf(" %c", &c) != 1) {
-            printf("Nespravny vstup.\n");
+            printf("Nerozumiem\n");
             return;
         }
         if (c == 'a') akt = akt->left;
         else if (c == 'n') akt = akt->right;
         else {
-            printf("Nespravny vstup.\n");
+            printf("Nerozumiem\n");
             return;
         }
         if (!akt) { /* ak strom nie je dobre zadaný */