diff --git a/src/game/Maps/SpawnManager.cpp b/src/game/Maps/SpawnManager.cpp
index 95d46c972a..ec642f78ce 100644
--- a/src/game/Maps/SpawnManager.cpp
+++ b/src/game/Maps/SpawnManager.cpp
@@ -163,7 +163,8 @@ void SpawnManager::Update()
     m_updated = true;
     if (!m_deferredSpawns.empty()) // cannot insert during update
     {
-        m_spawns.emplace_back(m_deferredSpawns);
+        m_spawns.reserve(m_spawns.size() + m_spawns.size());
+        std::move(std::begin(m_deferredSpawns), std::end(m_deferredSpawns), std::back_inserter(m_deferredSpawns));
         m_deferredSpawns.clear();
     }
     auto now = m_map.GetCurrentClockTime();