diff --git a/cv2/program.c b/cv2/program.c
index 0e7641e..5b567ad 100644
--- a/cv2/program.c
+++ b/cv2/program.c
@@ -14,7 +14,8 @@ int main(){
             break;
         }
         if (input < 0) {
-            break;
+            printf("Chyba: Málo platných hodnôt.\n")
+	    break;
         }
         field[count] = input;
         count++;