diff --git a/apps/openmw/mwclass/creature.cpp b/apps/openmw/mwclass/creature.cpp
index 80934f8858..450889eb2a 100644
--- a/apps/openmw/mwclass/creature.cpp
+++ b/apps/openmw/mwclass/creature.cpp
@@ -58,6 +58,11 @@ namespace
         cloned->mContainerStore = mContainerStore->clone();
         return cloned;
     }
+
+    bool isFlagBitSet(const MWWorld::Ptr &ptr, ESM::Creature::Flags bitMask)
+    {
+        return (ptr.get<ESM::Creature>()->mBase->mFlags & bitMask) != 0;
+    }
 }
 
 namespace MWClass
@@ -774,10 +779,4 @@ namespace MWClass
         MWWorld::LiveCellRef<ESM::Creature> *ref = ptr.get<ESM::Creature>();
         scale *= ref->mBase->mScale;
     }
-
-    bool Creature::isFlagBitSet(const MWWorld::Ptr &ptr, ESM::Creature::Flags bitMask) const
-    {
-        MWWorld::LiveCellRef<ESM::Creature> *ref = ptr.get<ESM::Creature>();
-        return (ref->mBase->mFlags & bitMask) != 0;
-    }
 }
diff --git a/apps/openmw/mwclass/creature.hpp b/apps/openmw/mwclass/creature.hpp
index 1a29d03183..c4ea09255e 100644
--- a/apps/openmw/mwclass/creature.hpp
+++ b/apps/openmw/mwclass/creature.hpp
@@ -1,8 +1,6 @@
 #ifndef GAME_MWCLASS_CREATURE_H
 #define GAME_MWCLASS_CREATURE_H
 
-#include <components/esm/loadcrea.hpp>
-
 #include "actor.hpp"
 
 namespace ESM
@@ -136,11 +134,6 @@ namespace MWClass
             virtual int getBaseFightRating(const MWWorld::Ptr &ptr) const;
 
             virtual void adjustScale(const MWWorld::Ptr& ptr, osg::Vec3f& scale) const;
-
-        private:
-
-            /// \return true if any of the indicated bits in Creature's mFlags is set
-            bool isFlagBitSet(const MWWorld::Ptr &ptr, ESM::Creature::Flags bitMask) const;
     };
 }