diff --git a/radiantcore/rendersystem/backend/GLProgramFactory.cpp b/radiantcore/rendersystem/backend/GLProgramFactory.cpp
index 9dd5c966bd..652e6803ed 100644
--- a/radiantcore/rendersystem/backend/GLProgramFactory.cpp
+++ b/radiantcore/rendersystem/backend/GLProgramFactory.cpp
@@ -1,6 +1,5 @@
 #include "GLProgramFactory.h"
 
-#include "glprogram/GLSLDepthFillProgram.h"
 #include "glprogram/DepthFillAlphaProgram.h"
 #include "glprogram/CubeMapProgram.h"
 #include "glprogram/InteractionProgram.h"
diff --git a/radiantcore/rendersystem/backend/GLProgramFactory.h b/radiantcore/rendersystem/backend/GLProgramFactory.h
index a4144230d8..cfad789a76 100644
--- a/radiantcore/rendersystem/backend/GLProgramFactory.h
+++ b/radiantcore/rendersystem/backend/GLProgramFactory.h
@@ -14,7 +14,6 @@ typedef std::shared_ptr<GLProgram> GLProgramPtr;
 
 enum class ShaderProgram
 {
-    DepthFill,
     DepthFillAlpha,
     Interaction,
     CubeMap,
diff --git a/radiantcore/rendersystem/backend/glprogram/GLSLDepthFillProgram.cpp b/radiantcore/rendersystem/backend/glprogram/GLSLDepthFillProgram.cpp
deleted file mode 100644
index f4cbfc2e22..0000000000
--- a/radiantcore/rendersystem/backend/glprogram/GLSLDepthFillProgram.cpp
+++ /dev/null
@@ -1,29 +0,0 @@
-#include "GLSLDepthFillProgram.h"
-#include "../GLProgramFactory.h"
-#include "debugging/gl.h"
-
-#include "itextstream.h"
-
-namespace render
-{
-
-namespace 
-{
-    const char* DEPTHFILL_VP_FILENAME = "zfill_vp.glsl";
-    const char* DEPTHFILL_FP_FILENAME = "zfill_fp.glsl";
-}
-
-void GLSLDepthFillProgram::create()
-{
-    // Create the program object
-    rMessage() << "[renderer] Creating GLSL depthfill program" << std::endl;
-
-    _programObj = GLProgramFactory::createGLSLProgram(
-        DEPTHFILL_VP_FILENAME, DEPTHFILL_FP_FILENAME
-    );
-
-    debug::assertNoGlErrors();
-}
-
-}
-
diff --git a/radiantcore/rendersystem/backend/glprogram/GLSLDepthFillProgram.h b/radiantcore/rendersystem/backend/glprogram/GLSLDepthFillProgram.h
deleted file mode 100644
index e76537dd0b..0000000000
--- a/radiantcore/rendersystem/backend/glprogram/GLSLDepthFillProgram.h
+++ /dev/null
@@ -1,16 +0,0 @@
-#pragma once
-
-#include "GLSLProgramBase.h"
-
-namespace render
-{
-
-class GLSLDepthFillProgram :
-	public GLSLProgramBase
-{
-public:
-    void create() override;
-};
-
-} // namespace render
-