diff --git a/src/server/game/Instances/InstanceSaveMgr.cpp b/src/server/game/Instances/InstanceSaveMgr.cpp
index 6058b300b..f622976ec 100644
--- a/src/server/game/Instances/InstanceSaveMgr.cpp
+++ b/src/server/game/Instances/InstanceSaveMgr.cpp
@@ -94,7 +94,7 @@ InstanceSave* InstanceSaveMgr::AddInstanceSave(uint32 mapId, uint32 instanceId,
     }
     else
     {
-        resetTime = GameTime::GetGameTime().count() + 3 * DAY; // normals expire after 3 days even if someone is still bound to them, cleared on startup
+        resetTime = GameTime::GetGameTime().count() + static_cast<long long>(3) * DAY; // normals expire after 3 days even if someone is still bound to them, cleared on startup
         extendedResetTime = 0;
     }
     InstanceSave* save = new InstanceSave(mapId, instanceId, difficulty, resetTime, extendedResetTime);