diff --git a/src/gl/data/gl_vertexbuffer.h b/src/gl/data/gl_vertexbuffer.h
index 84967a9ee..a9619876d 100644
--- a/src/gl/data/gl_vertexbuffer.h
+++ b/src/gl/data/gl_vertexbuffer.h
@@ -204,7 +204,7 @@ public:
 	FModelVertexBuffer();
 	~FModelVertexBuffer();
 
-	unsigned int SetupFrame(unsigned int frame1, unsigned int frame2, float factor);
+	unsigned int SetupFrame(unsigned int frame1, unsigned int frame2);
 };
 
 #define VMO ((FModelVertex*)NULL)
diff --git a/src/gl/models/gl_models.cpp b/src/gl/models/gl_models.cpp
index ae34e882d..31d05ab41 100644
--- a/src/gl/models/gl_models.cpp
+++ b/src/gl/models/gl_models.cpp
@@ -138,7 +138,7 @@ FModelVertexBuffer::~FModelVertexBuffer()
 //
 //===========================================================================
 
-unsigned int FModelVertexBuffer::SetupFrame(unsigned int frame1, unsigned int frame2, float factor)
+unsigned int FModelVertexBuffer::SetupFrame(unsigned int frame1, unsigned int frame2)
 {
 	glBindBuffer(GL_ARRAY_BUFFER, vbo_id);
 	glVertexAttribPointer(VATTR_VERTEX, 3, GL_FLOAT, false, sizeof(FModelVertex), &VMO[frame1].x);
diff --git a/src/gl/models/gl_models_md2.cpp b/src/gl/models/gl_models_md2.cpp
index 3d0fad8aa..33548f2e6 100644
--- a/src/gl/models/gl_models_md2.cpp
+++ b/src/gl/models/gl_models_md2.cpp
@@ -304,10 +304,12 @@ void FDMDModel::RenderFrame(FTexture * skin, int frameno, int frameno2, double i
 	FMaterial * tex = FMaterial::ValidateTexture(skin, false);
 
 	gl_RenderState.SetMaterial(tex, CLAMP_NONE, translation, -1, false);
+	gl_RenderState.SetInterpolationFactor((float)inter);
 
 	gl_RenderState.Apply();
-	GLRenderer->mModelVBO->SetupFrame(frames[frameno].vindex, frames[frameno2].vindex, inter);
+	GLRenderer->mModelVBO->SetupFrame(frames[frameno].vindex, frames[frameno2].vindex);
 	glDrawArrays(GL_TRIANGLES, 0, lodInfo[0].numTriangles * 3);
+	gl_RenderState.SetInterpolationFactor(0.f);
 }
 
 
diff --git a/src/gl/models/gl_models_md3.cpp b/src/gl/models/gl_models_md3.cpp
index 4b1788306..1dbda6acd 100644
--- a/src/gl/models/gl_models_md3.cpp
+++ b/src/gl/models/gl_models_md3.cpp
@@ -251,6 +251,7 @@ void FMD3Model::RenderFrame(FTexture * skin, int frameno, int frameno2, double i
 {
 	if (frameno>=numFrames || frameno2>=numFrames) return;
 
+	gl_RenderState.SetInterpolationFactor((float)inter);
 	for(int i=0;i<numSurfaces;i++)
 	{
 		MD3Surface * surf = &surfaces[i];
@@ -270,9 +271,10 @@ void FMD3Model::RenderFrame(FTexture * skin, int frameno, int frameno2, double i
 		gl_RenderState.SetMaterial(tex, CLAMP_NONE, translation, -1, false);
 
 		gl_RenderState.Apply();
-		GLRenderer->mModelVBO->SetupFrame(surf->vindex + frameno * surf->numVertices, surf->vindex + frameno2 * surf->numVertices, inter);
+		GLRenderer->mModelVBO->SetupFrame(surf->vindex + frameno * surf->numVertices, surf->vindex + frameno2 * surf->numVertices);
 		glDrawElements(GL_TRIANGLES, surf->numTriangles * 3, GL_UNSIGNED_INT, (void*)(intptr_t)(surf->iindex * sizeof(unsigned int)));
 	}
+	gl_RenderState.SetInterpolationFactor(0.f);
 }
 
 FMD3Model::~FMD3Model()
diff --git a/src/gl/models/gl_voxels.cpp b/src/gl/models/gl_voxels.cpp
index b1bb4de5a..7fb18766f 100644
--- a/src/gl/models/gl_voxels.cpp
+++ b/src/gl/models/gl_voxels.cpp
@@ -420,7 +420,7 @@ void FVoxelModel::RenderFrame(FTexture * skin, int frame, int frame2, double int
 	gl_RenderState.SetMaterial(tex, CLAMP_NOFILTER, translation, -1, false);
 
 	gl_RenderState.Apply();
-	GLRenderer->mModelVBO->SetupFrame(vindex, vindex, 0.f);
+	GLRenderer->mModelVBO->SetupFrame(vindex, vindex);
 	glDrawElements(GL_TRIANGLES, mIndices.Size(), GL_UNSIGNED_INT, (void*)(intptr_t)(iindex * sizeof(unsigned int)));
 }