diff --git a/apps/opencs/model/world/scriptcontext.cpp b/apps/opencs/model/world/scriptcontext.cpp
index 8a4670ed2..9da49defe 100644
--- a/apps/opencs/model/world/scriptcontext.cpp
+++ b/apps/opencs/model/world/scriptcontext.cpp
@@ -100,6 +100,7 @@ bool CSMWorld::ScriptContext::isId (const std::string& name) const
         mIds = mData.getIds();
 
         std::for_each (mIds.begin(), mIds.end(), &Misc::StringUtils::lowerCase);
+        std::sort (mIds.begin(), mIds.end());
 
         mIdsUpdated = true;
     }