diff --git a/cv7/program.c b/cv7/program.c
index 5337ffc..7a5e98e 100644
--- a/cv7/program.c
+++ b/cv7/program.c
@@ -55,6 +55,8 @@ void print_tree(struct tree* tree) {
         print_tree(tree->right);
     } else if (r == EOF) {
         printf("Koniec vstupu\n");
+    }else if (r == NULL) {
+        printf("GOVNO\n");
     } else {
         printf("Nerozumiem\n");
         exit(0);