diff --git a/du6/program.c b/du6/program.c
index fba0972..4802166 100644
--- a/du6/program.c
+++ b/du6/program.c
@@ -106,7 +106,7 @@ void run_knowledge_system(struct tree* node) {
         } else if (answer[0] == 'n') {
             run_knowledge_system(node->right);
         } else {
-            printf("Nespravny vstup.\n");
+            printf("Nerozumiem\n");
             return;
         }
     }