diff --git a/server/masterserver/gsmgr.cc b/server/masterserver/gsmgr.cc
index 63c1ad2..3330881 100644
--- a/server/masterserver/gsmgr.cc
+++ b/server/masterserver/gsmgr.cc
@@ -213,6 +213,16 @@ std::shared_ptr<GSNode> GSMgr::GetNodeByNodeKey(const std::string& node_key)
     return itr != node_key_hash_.end() ? itr->second : nullptr;
 }
 
+std::shared_ptr<GSNode> GSMgr::GetNodeByInstanceId(int instance_id)
+{
+    for (auto& pair : node_key_hash_) {
+        if (pair.second->instance_id == instance_id) {
+            return pair.second;
+        }
+    }
+    return nullptr;
+}
+
 std::shared_ptr<GSNode> GSMgr::AllocNode()
 {
     std::vector<std::shared_ptr<GSNode>>* sorted_nodes = GetSortedNodes();
diff --git a/server/masterserver/gsmgr.h b/server/masterserver/gsmgr.h
index f5e0cf8..f8660aa 100644
--- a/server/masterserver/gsmgr.h
+++ b/server/masterserver/gsmgr.h
@@ -32,6 +32,7 @@ class GSMgr : public a8::Singleton<GSMgr>
  private:
     std::shared_ptr<GSNode> GetNodeByTeamId(const std::string& team_id);
     std::shared_ptr<GSNode> GetNodeByNodeKey(const std::string& node_key);
+    std::shared_ptr<GSNode> GetNodeByInstanceId(int instance_id);
     std::shared_ptr<GSNode> AllocNode();
     void RearrangeNode();
     void AddNodeToSortedNodes(std::shared_ptr<GSNode> node);