diff --git a/src/common/models/model.h b/src/common/models/model.h
index bb2699a1a7..f77574e9a2 100644
--- a/src/common/models/model.h
+++ b/src/common/models/model.h
@@ -69,12 +69,12 @@ public:
 	virtual ~FModel();
 
 	virtual bool Load(const char * fn, int lumpnum, const char * buffer, int length) = 0;
-	virtual int FindFrame(const char* name, bool nodefault = false) = 0;
+	virtual int FindFrame(const char * name, bool nodefault = false) = 0;
 	virtual void RenderFrame(FModelRenderer *renderer, FGameTexture * skin, int frame, int frame2, double inter, int translation, const FTextureID* surfaceskinids, const TArray<VSMatrix>& animationData) = 0;
 	virtual void BuildVertexBuffer(FModelRenderer *renderer) = 0;
 	virtual void AddSkins(uint8_t *hitlist, const FTextureID* surfaceskinids) = 0;
 	virtual float getAspectFactor(float vscale) { return 1.f; }
-	virtual const TArray<VSMatrix>* AttachAnimationData() = 0;
+	virtual const TArray<VSMatrix>* AttachAnimationData() { return nullptr; };
 
 	void SetVertexBuffer(int type, IModelVertexBuffer *buffer) { mVBuf[type] = buffer; }
 	IModelVertexBuffer *GetVertexBuffer(int type) const { return mVBuf[type]; }
diff --git a/src/common/models/model_kvx.h b/src/common/models/model_kvx.h
index fa10401f0a..e6f569bd6e 100644
--- a/src/common/models/model_kvx.h
+++ b/src/common/models/model_kvx.h
@@ -64,7 +64,6 @@ public:
 	FTextureID GetPaletteTexture() const { return mPalette; }
 	void BuildVertexBuffer(FModelRenderer *renderer) override;
 	float getAspectFactor(float vscale) override;
-	const TArray<VSMatrix>* AttachAnimationData() override;
 };
 
 
diff --git a/src/common/models/model_md2.h b/src/common/models/model_md2.h
index 8be0497337..f6c4ce050e 100644
--- a/src/common/models/model_md2.h
+++ b/src/common/models/model_md2.h
@@ -116,7 +116,6 @@ public:
 	virtual void RenderFrame(FModelRenderer *renderer, FGameTexture * skin, int frame, int frame2, double inter, int translation, const FTextureID* surfaceskinids, const TArray<VSMatrix>& animationData) override;
 	virtual void LoadGeometry();
 	virtual void AddSkins(uint8_t *hitlist, const FTextureID* surfaceskinids) override;
-	const TArray<VSMatrix>* AttachAnimationData() override;
 
 	void UnloadGeometry();
 	void BuildVertexBuffer(FModelRenderer *renderer);
diff --git a/src/common/models/model_md3.h b/src/common/models/model_md3.h
index 84dda60af5..84fba75049 100644
--- a/src/common/models/model_md3.h
+++ b/src/common/models/model_md3.h
@@ -71,6 +71,5 @@ public:
 	void LoadGeometry();
 	void BuildVertexBuffer(FModelRenderer *renderer);
 	virtual void AddSkins(uint8_t *hitlist, const FTextureID* surfaceskinids) override;
-	const TArray<VSMatrix>* AttachAnimationData() override;
 };
 
diff --git a/src/common/models/model_obj.h b/src/common/models/model_obj.h
index 97fb1c15a9..4eb4883d9a 100644
--- a/src/common/models/model_obj.h
+++ b/src/common/models/model_obj.h
@@ -101,7 +101,6 @@ public:
 	void RenderFrame(FModelRenderer* renderer, FGameTexture* skin, int frame, int frame2, double inter, int translation, const FTextureID* surfaceskinids, const TArray<VSMatrix>& animationData) override;
 	void BuildVertexBuffer(FModelRenderer* renderer) override;
 	void AddSkins(uint8_t* hitlist, const FTextureID* surfaceskinids) override;
-	const TArray<VSMatrix>* AttachAnimationData() override;
 };
 
 #endif
diff --git a/src/common/models/model_ue1.h b/src/common/models/model_ue1.h
index 7ae9d11df8..d59526ea6a 100644
--- a/src/common/models/model_ue1.h
+++ b/src/common/models/model_ue1.h
@@ -29,7 +29,6 @@ public:
 	void RenderFrame(FModelRenderer *renderer, FGameTexture * skin, int frame, int frame2, double inter, int translation, const FTextureID* surfaceskinids, const TArray<VSMatrix>& animationData) override;
 	void BuildVertexBuffer(FModelRenderer *renderer) override;
 	void AddSkins(uint8_t *hitlist, const FTextureID* surfaceskinids) override;
-	const TArray<VSMatrix>* AttachAnimationData() override;
 	void LoadGeometry();
 	void UnloadGeometry();
 	FUE1Model()
diff --git a/src/common/models/models_iqm.cpp b/src/common/models/models_iqm.cpp
index a3354e04b5..5d1985fc09 100644
--- a/src/common/models/models_iqm.cpp
+++ b/src/common/models/models_iqm.cpp
@@ -426,10 +426,10 @@ void IQMModel::LoadBlendIndexes(IQMFileReader& reader, const IQMVertexArray& ver
 		for (FModelVertex& v : Vertices)
 		{
 			int x = reader.ReadUByte();
-            int y = reader.ReadUByte();
-            int z = reader.ReadUByte();
-            int w = reader.ReadUByte();
-            v.SetBoneSelector(x, y, z, w);
+			int y = reader.ReadUByte();
+			int z = reader.ReadUByte();
+			int w = reader.ReadUByte();
+			v.SetBoneSelector(x, y, z, w);
 		}
 	}
 	else if (vertexArray.Format == IQM_INT && vertexArray.Size == 4)
diff --git a/src/common/models/models_md2.cpp b/src/common/models/models_md2.cpp
index 6a84b4e469..c55bc42603 100644
--- a/src/common/models/models_md2.cpp
+++ b/src/common/models/models_md2.cpp
@@ -381,19 +381,6 @@ void FDMDModel::RenderFrame(FModelRenderer *renderer, FGameTexture * skin, int f
 	renderer->SetInterpolation(0.f);
 }
 
-//===========================================================================
-//
-// Pointless for this format
-//
-//===========================================================================
-
-const TArray<VSMatrix>* FDMDModel::AttachAnimationData()
-{
-	return {};
-}
-
-
-
 //===========================================================================
 //
 // Internal data structures of MD2 files - only used during loading
diff --git a/src/common/models/models_md3.cpp b/src/common/models/models_md3.cpp
index b9a3ceeb36..7c8119efd9 100644
--- a/src/common/models/models_md3.cpp
+++ b/src/common/models/models_md3.cpp
@@ -334,7 +334,7 @@ int FMD3Model::FindFrame(const char* name, bool nodefault)
 	{
 		if (!stricmp(name, Frames[i].Name)) return i;
 	}
-	return -1;
+	return FErr_NotFound;
 }
 
 //===========================================================================
@@ -379,13 +379,3 @@ void FMD3Model::RenderFrame(FModelRenderer *renderer, FGameTexture * skin, int f
 	renderer->SetInterpolation(0.f);
 }
 
-//===========================================================================
-//
-//
-//
-//===========================================================================
-
-const TArray<VSMatrix>* FMD3Model::AttachAnimationData()
-{
-	return {};
-}
diff --git a/src/common/models/models_obj.cpp b/src/common/models/models_obj.cpp
index 6f93061706..9c52e1d4b6 100644
--- a/src/common/models/models_obj.cpp
+++ b/src/common/models/models_obj.cpp
@@ -700,14 +700,3 @@ FOBJModel::~FOBJModel()
 	faces.Clear();
 	surfaces.Clear();
 }
-
-//===========================================================================
-//
-//
-//
-//===========================================================================
-
-const TArray<VSMatrix>* FOBJModel::AttachAnimationData()
-{
-	return {};
-}
diff --git a/src/common/models/models_ue1.cpp b/src/common/models/models_ue1.cpp
index 04450a1d3d..f6936b1686 100644
--- a/src/common/models/models_ue1.cpp
+++ b/src/common/models/models_ue1.cpp
@@ -321,8 +321,3 @@ FUE1Model::~FUE1Model()
 {
 	UnloadGeometry();
 }
-
-const TArray<VSMatrix>* FUE1Model::AttachAnimationData()
-{
-	return {};
-}
diff --git a/src/common/models/models_voxel.cpp b/src/common/models/models_voxel.cpp
index 2e6ca4bd65..4832757bdd 100644
--- a/src/common/models/models_voxel.cpp
+++ b/src/common/models/models_voxel.cpp
@@ -406,15 +406,3 @@ void FVoxelModel::RenderFrame(FModelRenderer *renderer, FGameTexture * skin, int
 	renderer->SetupFrame(this, 0, 0, 0, {});
 	renderer->DrawElements(mNumIndices, 0);
 }
-
-//===========================================================================
-//
-// Voxels don't use bones
-//
-//===========================================================================
-
-const TArray<VSMatrix>* FVoxelModel::AttachAnimationData()
-{
-	return {};
-}
-
diff --git a/src/r_data/models.cpp b/src/r_data/models.cpp
index 4b6c70d536..94358a078e 100644
--- a/src/r_data/models.cpp
+++ b/src/r_data/models.cpp
@@ -343,7 +343,7 @@ void RenderFrameModels(FModelRenderer *renderer, FLevelLocals *Level, const FSpr
 			auto& ssids = surfaceskinids.Size() > 0 ? surfaceskinids : smf->surfaceskinIDs;
 			auto ssidp = (unsigned)(i * MD3_MAX_SURFACES) < ssids.Size() ? &ssids[i * MD3_MAX_SURFACES] : nullptr;
 
-			const TArray<VSMatrix>* animationData = {};
+			const TArray<VSMatrix>* animationData = nullptr;
 
 			if (smf->animationIDs[i] >= 0)
 			{