diff --git a/Resource/model/CModel.cpp b/Resource/model/CModel.cpp
index 2be49bfb..a2f8c1b2 100644
--- a/Resource/model/CModel.cpp
+++ b/Resource/model/CModel.cpp
@@ -122,14 +122,16 @@ void CModel::DrawSurface(ERenderOptions Options, u32 Surface, u32 MatSet)
     mVBO.Unbind();
 }
 
-void CModel::DrawWireframe(ERenderOptions Options, const CColor& WireColor)
+void CModel::DrawWireframe(ERenderOptions Options, CColor WireColor /*= CColor::skWhite*/)
 {
     if (!mBuffered) BufferGL();
 
     // Set up wireframe
+    WireColor.a = 0;
     CDrawUtil::UseColorShader(WireColor);
     Options |= eNoMaterialSetup;
     glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+    glBlendFunc(GL_ONE, GL_ZERO);
 
     // Draw surfaces
     for (u32 iSurf = 0; iSurf < mSurfaces.size(); iSurf++)
diff --git a/Resource/model/CModel.h b/Resource/model/CModel.h
index 2c9f7192..db109b77 100644
--- a/Resource/model/CModel.h
+++ b/Resource/model/CModel.h
@@ -27,7 +27,7 @@ public:
     void ClearGLBuffer();
     void Draw(ERenderOptions Options, u32 MatSet);
     void DrawSurface(ERenderOptions Options, u32 Surface, u32 MatSet);
-    void DrawWireframe(ERenderOptions Options, const CColor& WireColor = CColor::skWhite);
+    void DrawWireframe(ERenderOptions Options, CColor WireColor = CColor::skWhite);
 
     u32 GetMatSetCount();
     u32 GetMatCount();
diff --git a/Resource/model/CStaticModel.cpp b/Resource/model/CStaticModel.cpp
index 53a53f22..c4dd2579 100644
--- a/Resource/model/CStaticModel.cpp
+++ b/Resource/model/CStaticModel.cpp
@@ -144,14 +144,16 @@ void CStaticModel::DrawSurface(ERenderOptions Options, u32 Surface)
     mVBO.Unbind();
 }
 
-void CStaticModel::DrawWireframe(ERenderOptions Options, const CColor& WireColor)
+void CStaticModel::DrawWireframe(ERenderOptions Options, CColor WireColor /*= CColor::skWhite*/)
 {
     if (!mBuffered) BufferGL();
 
     // Set up wireframe
+    WireColor.a = 0;
     CDrawUtil::UseColorShader(WireColor);
     Options |= eNoMaterialSetup;
     glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+    glBlendFunc(GL_ONE, GL_ZERO);
 
     // Draw surfaces
     for (u32 iSurf = 0; iSurf < mSurfaces.size(); iSurf++)
diff --git a/Resource/model/CStaticModel.h b/Resource/model/CStaticModel.h
index 68105ec6..7f8bd1e5 100644
--- a/Resource/model/CStaticModel.h
+++ b/Resource/model/CStaticModel.h
@@ -26,7 +26,7 @@ public:
     void ClearGLBuffer();
     void Draw(ERenderOptions Options);
     void DrawSurface(ERenderOptions Options, u32 Surface);
-    void DrawWireframe(ERenderOptions Options, const CColor& WireColor);
+    void DrawWireframe(ERenderOptions Options, CColor WireColor = CColor::skWhite);
 
     CMaterial* GetMaterial();
     void SetMaterial(CMaterial *pMat);