diff --git a/apps/openmw/mwbase/mechanicsmanager.hpp b/apps/openmw/mwbase/mechanicsmanager.hpp
index 23d79c1a6b..551d86a041 100644
--- a/apps/openmw/mwbase/mechanicsmanager.hpp
+++ b/apps/openmw/mwbase/mechanicsmanager.hpp
@@ -8,9 +8,6 @@
 #include <string_view>
 #include <vector>
 
-#include "../mwmechanics/greetingstate.hpp"
-#include "../mwrender/animationpriority.hpp"
-
 #include "../mwworld/ptr.hpp"
 
 namespace osg
@@ -27,6 +24,11 @@ namespace ESM
     class ESMWriter;
 }
 
+namespace MWMechanics
+{
+    enum class GreetingState;
+}
+
 namespace MWWorld
 {
     class Ptr;
diff --git a/apps/openmw/mwmechanics/actor.hpp b/apps/openmw/mwmechanics/actor.hpp
index 69e370ec86..45c077f98c 100644
--- a/apps/openmw/mwmechanics/actor.hpp
+++ b/apps/openmw/mwmechanics/actor.hpp
@@ -73,7 +73,7 @@ namespace MWMechanics
         CharacterController mCharacterController;
         int mGreetingTimer{ 0 };
         float mTargetAngleRadians{ 0.f };
-        GreetingState mGreetingState{ Greet_None };
+        GreetingState mGreetingState{ GreetingState::None };
         Misc::DeviatingPeriodicTimer mEngageCombat{ 1.0f, 0.25f,
             Misc::Rng::deviate(0, 0.25f, MWBase::Environment::get().getWorld()->getPrng()) };
         bool mIsTurningToPlayer{ false };
diff --git a/apps/openmw/mwmechanics/actors.cpp b/apps/openmw/mwmechanics/actors.cpp
index 69108f9aff..4766afb55a 100644
--- a/apps/openmw/mwmechanics/actors.cpp
+++ b/apps/openmw/mwmechanics/actors.cpp
@@ -50,6 +50,7 @@
 #include "attacktype.hpp"
 #include "character.hpp"
 #include "creaturestats.hpp"
+#include "greetingstate.hpp"
 #include "movement.hpp"
 #include "npcstats.hpp"
 #include "steering.hpp"
@@ -487,7 +488,7 @@ namespace MWMechanics
         {
             actorState.setTurningToPlayer(false);
             actorState.setGreetingTimer(0);
-            actorState.setGreetingState(Greet_None);
+            actorState.setGreetingState(GreetingState::None);
             return;
         }
 
@@ -525,7 +526,7 @@ namespace MWMechanics
 
         int greetingTimer = actorState.getGreetingTimer();
         GreetingState greetingState = actorState.getGreetingState();
-        if (greetingState == Greet_None)
+        if (greetingState == GreetingState::None)
         {
             if ((playerPos - actorPos).length2() <= helloDistance * helloDistance && !playerStats.isDead()
                 && !actorStats.isParalyzed() && !isTargetMagicallyHidden(player)
@@ -535,14 +536,14 @@ namespace MWMechanics
 
             if (greetingTimer >= GREETING_SHOULD_START)
             {
-                greetingState = Greet_InProgress;
+                greetingState = GreetingState::InProgress;
                 if (!MWBase::Environment::get().getDialogueManager()->say(actor, ESM::RefId::stringRefId("hello")))
-                    greetingState = Greet_Done;
+                    greetingState = GreetingState::Done;
                 greetingTimer = 0;
             }
         }
 
-        if (greetingState == Greet_InProgress)
+        if (greetingState == GreetingState::InProgress)
         {
             greetingTimer++;
 
@@ -554,16 +555,16 @@ namespace MWMechanics
 
             if (greetingTimer >= GREETING_COOLDOWN)
             {
-                greetingState = Greet_Done;
+                greetingState = GreetingState::Done;
                 greetingTimer = 0;
             }
         }
 
-        if (greetingState == Greet_Done)
+        if (greetingState == GreetingState::Done)
         {
             float resetDist = 2 * helloDistance;
             if ((playerPos - actorPos).length2() >= resetDist * resetDist)
-                greetingState = Greet_None;
+                greetingState = GreetingState::None;
         }
 
         actorState.setGreetingTimer(greetingTimer);
@@ -2381,7 +2382,7 @@ namespace MWMechanics
     {
         const auto it = mIndex.find(ptr.mRef);
         if (it == mIndex.end())
-            return Greet_None;
+            return GreetingState::None;
 
         return it->second->getGreetingState();
     }
diff --git a/apps/openmw/mwmechanics/aitravel.cpp b/apps/openmw/mwmechanics/aitravel.cpp
index f0781565bf..a669de8339 100644
--- a/apps/openmw/mwmechanics/aitravel.cpp
+++ b/apps/openmw/mwmechanics/aitravel.cpp
@@ -12,6 +12,7 @@
 
 #include "character.hpp"
 #include "creaturestats.hpp"
+#include "greetingstate.hpp"
 #include "movement.hpp"
 
 namespace
@@ -77,7 +78,7 @@ namespace MWMechanics
 
         if (!stats.getMovementFlag(CreatureStats::Flag_ForceJump)
             && !stats.getMovementFlag(CreatureStats::Flag_ForceSneak)
-            && (mechMgr->isTurningToPlayer(actor) || mechMgr->getGreetingState(actor) == Greet_InProgress))
+            && (mechMgr->isTurningToPlayer(actor) || mechMgr->getGreetingState(actor) == GreetingState::InProgress))
             return false;
 
         const osg::Vec3f actorPos(actor.getRefData().getPosition().asVec3());
diff --git a/apps/openmw/mwmechanics/aiwander.cpp b/apps/openmw/mwmechanics/aiwander.cpp
index 71cc8b5e7d..ad4fc730df 100644
--- a/apps/openmw/mwmechanics/aiwander.cpp
+++ b/apps/openmw/mwmechanics/aiwander.cpp
@@ -25,6 +25,7 @@
 #include "actorutil.hpp"
 #include "character.hpp"
 #include "creaturestats.hpp"
+#include "greetingstate.hpp"
 #include "movement.hpp"
 #include "pathgrid.hpp"
 
@@ -257,7 +258,7 @@ namespace MWMechanics
             && !cStats.getMovementFlag(CreatureStats::Flag_ForceSneak))
         {
             GreetingState greetingState = MWBase::Environment::get().getMechanicsManager()->getGreetingState(actor);
-            if (greetingState == Greet_InProgress)
+            if (greetingState == GreetingState::InProgress)
             {
                 if (storage.mState == AiWanderStorage::Wander_Walking)
                 {
@@ -526,7 +527,7 @@ namespace MWMechanics
 
         // Check if idle animation finished
         GreetingState greetingState = MWBase::Environment::get().getMechanicsManager()->getGreetingState(actor);
-        if (!checkIdle(actor, storage.mIdleAnimation) && (greetingState == Greet_Done || greetingState == Greet_None))
+        if (!checkIdle(actor, storage.mIdleAnimation) && greetingState != GreetingState::InProgress)
         {
             if (mPathFinder.isPathConstructed())
                 storage.setState(AiWanderStorage::Wander_Walking, !mUsePathgrid);
diff --git a/apps/openmw/mwmechanics/greetingstate.hpp b/apps/openmw/mwmechanics/greetingstate.hpp
index 9b37096322..4a5a4aa2f8 100644
--- a/apps/openmw/mwmechanics/greetingstate.hpp
+++ b/apps/openmw/mwmechanics/greetingstate.hpp
@@ -3,11 +3,11 @@
 
 namespace MWMechanics
 {
-    enum GreetingState
+    enum class GreetingState
     {
-        Greet_None,
-        Greet_InProgress,
-        Greet_Done
+        None,
+        InProgress,
+        Done
     };
 }
 
diff --git a/apps/openmw/mwscript/aiextensions.cpp b/apps/openmw/mwscript/aiextensions.cpp
index a91a585367..e5aa3b1f91 100644
--- a/apps/openmw/mwscript/aiextensions.cpp
+++ b/apps/openmw/mwscript/aiextensions.cpp
@@ -22,6 +22,7 @@
 #include "../mwmechanics/aitravel.hpp"
 #include "../mwmechanics/aiwander.hpp"
 #include "../mwmechanics/creaturestats.hpp"
+#include "../mwmechanics/greetingstate.hpp"
 
 #include "../mwbase/environment.hpp"
 #include "../mwbase/mechanicsmanager.hpp"
@@ -487,7 +488,7 @@ namespace MWScript
                     else if (testedTargetId == "Player") // Currently the player ID is hardcoded
                     {
                         MWBase::MechanicsManager* mechMgr = MWBase::Environment::get().getMechanicsManager();
-                        bool greeting = mechMgr->getGreetingState(actor) == MWMechanics::Greet_InProgress;
+                        bool greeting = mechMgr->getGreetingState(actor) == MWMechanics::GreetingState::InProgress;
                         bool sayActive = MWBase::Environment::get().getSoundManager()->sayActive(actor);
                         targetsAreEqual = (greeting && sayActive) || mechMgr->isTurningToPlayer(actor);
                     }
diff --git a/apps/openmw/mwworld/class.hpp b/apps/openmw/mwworld/class.hpp
index d3d75aa935..7e49fad61b 100644
--- a/apps/openmw/mwworld/class.hpp
+++ b/apps/openmw/mwworld/class.hpp
@@ -6,7 +6,6 @@
 #include <string>
 #include <vector>
 
-#include <osg/Quat>
 #include <osg/Vec4f>
 
 #include "doorstate.hpp"
@@ -16,9 +15,13 @@
 #include "../mwmechanics/damagesourcetype.hpp"
 
 #include <components/esm/refid.hpp>
-#include <components/esm3/loadskil.hpp>
 #include <components/vfs/pathutil.hpp>
 
+namespace osg
+{
+    class Quat;
+}
+
 namespace ESM
 {
     struct ObjectState;