diff --git a/cv7/program.c b/cv7/program.c
index 5171f62..a31b696 100644
--- a/cv7/program.c
+++ b/cv7/program.c
@@ -92,15 +92,14 @@ void interact(struct tree *node)
     char answer[SIZE];
     while (fgets(answer, SIZE, stdin))
     {
-        answer[strcspn(answer, "\n")] = 0;
-
-
-        if (answer[0] == '\0')
+        if (answer[0] == '\n')
         {
             printf("Koniec vstupu\n");
             return;
         }
 
+        answer[strcspn(answer, "\n")] = 0;
+
         if (strcmp(answer, "a") == 0)
         {
             interact(node->left);