diff --git a/server/gameserver/mapservice.cc b/server/gameserver/mapservice.cc
index a08915c..4806020 100644
--- a/server/gameserver/mapservice.cc
+++ b/server/gameserver/mapservice.cc
@@ -131,6 +131,8 @@ void MapService::AddCollider(ColliderComponent* collider)
             }
         }
         break;
+    default:
+        break;
     }
     if (top_node) {
         auto pair = node_hash_.find(collider);
@@ -165,7 +167,7 @@ void MapService::GetColliders(float world_x, float world_y, std::set<ColliderCom
     if (center_grid_id < 0 || center_grid_id >= max_grid_id_) {
         return;
     }
-    for (size_t i = 0; i < a8::ArraySize(grid_offset_arr_); ++i) {
+    for (int i = 0; i < a8::ArraySize(grid_offset_arr_); ++i) {
         int grid_id = center_grid_id + grid_offset_arr_[i];
         if (grid_id >= 0 && grid_id < max_grid_id_) {
             list_head* head = &map_cells_[grid_id];