diff --git a/lua_scripts/Store_System/Store_DataStruct.lua b/lua_scripts/Store_System/Store_DataStruct.lua
index cec9e0e..04806d2 100644
--- a/lua_scripts/Store_System/Store_DataStruct.lua
+++ b/lua_scripts/Store_System/Store_DataStruct.lua
@@ -162,6 +162,12 @@ function CreatureDisplays.Load()
         end
     end
 
+    -- If the store DB is unavailable or there are no creature-backed services,
+    -- avoid generating invalid SQL such as `IN ()`.
+    if (tmp == "") then
+        return
+    end
+
     local Query = nil
     if(GetCoreName() == "TrinityCore") then
         Query = WorldDBQuery("SELECT entry, `name`, subname, IconName, type_flags, `type`, family, `rank`, KillCredit1, KillCredit2, HealthModifier, ManaModifier, RacialLeader, MovementType, modelId1, modelId2, modelId3, modelId4 FROM creature_template WHERE entry IN ("..tmp..");")