diff --git a/src/engine/renderer/gl_shader.cpp b/src/engine/renderer/gl_shader.cpp
index b1f67e3289..6f8da6a9f3 100644
--- a/src/engine/renderer/gl_shader.cpp
+++ b/src/engine/renderer/gl_shader.cpp
@@ -2501,8 +2501,7 @@ GLShader_skybox::GLShader_skybox( GLShaderManager *manager ) :
 	u_AlphaThreshold( this ),
 	u_ModelMatrix( this ),
 	u_ModelViewProjectionMatrix( this ),
-	u_InverseLightFactor( this ),
-	GLDeformStage( this )
+	u_InverseLightFactor( this )
 {
 }
 
@@ -2523,8 +2522,7 @@ GLShader_skyboxMaterial::GLShader_skyboxMaterial( GLShaderManager* manager ) :
 	u_AlphaThreshold( this ),
 	u_ModelMatrix( this ),
 	u_ModelViewProjectionMatrix( this ),
-	u_InverseLightFactor( this ),
-	GLDeformStage( this ) {
+	u_InverseLightFactor( this ) {
 }
 
 void GLShader_skyboxMaterial::SetShaderProgramUniforms( shaderProgram_t* shaderProgram ) {
diff --git a/src/engine/renderer/gl_shader.h b/src/engine/renderer/gl_shader.h
index 694acb3e2b..a379a3d4ab 100644
--- a/src/engine/renderer/gl_shader.h
+++ b/src/engine/renderer/gl_shader.h
@@ -4315,8 +4315,7 @@ class GLShader_skybox :
 	public u_AlphaThreshold,
 	public u_ModelMatrix,
 	public u_ModelViewProjectionMatrix,
-	public u_InverseLightFactor,
-	public GLDeformStage
+	public u_InverseLightFactor
 {
 public:
 	GLShader_skybox( GLShaderManager *manager );
@@ -4334,8 +4333,7 @@ class GLShader_skyboxMaterial :
 	public u_AlphaThreshold,
 	public u_ModelMatrix,
 	public u_ModelViewProjectionMatrix,
-	public u_InverseLightFactor,
-	public GLDeformStage {
+	public u_InverseLightFactor {
 	public:
 	GLShader_skyboxMaterial( GLShaderManager* manager );
 	void SetShaderProgramUniforms( shaderProgram_t* shaderProgram ) override;