diff --git a/main.cpp b/main.cpp
index d36e003..e4841a2 100644
--- a/main.cpp
+++ b/main.cpp
@@ -247,7 +247,7 @@ void printBoard(char **board, int x, int y) {
     for (int i = 0; i < x; ++i) {
         int length = 2 + (i >= 10 ? 2 : 1);
        for(int j = 0; j < y; ++j) {
-           if (ans[i + 2][j + 2].size() > length) {
+           if ((int)ans[i + 2][j + 2].size() > length) {
                length = ans[i + 2][j + 2].size();
            }
        }