diff --git a/du6/program.c b/du6/program.c
index 0eabc9e..e554d99 100644
--- a/du6/program.c
+++ b/du6/program.c
@@ -82,7 +82,7 @@ void run_system(struct tree* node) {
 
         char c;
         if (scanf(" %c", &c) != 1) {
-            printf("Nespravny vstup.\n");
+            printf("Nerozumiem.\n");
             return;
         }
 
@@ -91,7 +91,7 @@ void run_system(struct tree* node) {
         else if (c == 'n')            //ні → вправо
             node = node->right;
         else {
-            printf("Nespravny vstup.\n");
+            printf("Nerozumiem.\n");
             return;
         }
     }