diff --git a/libkwineffects/kwinglutils_funcs.cpp b/libkwineffects/kwinglutils_funcs.cpp
index c0595af5ea..71fd25c7d2 100644
--- a/libkwineffects/kwinglutils_funcs.cpp
+++ b/libkwineffects/kwinglutils_funcs.cpp
@@ -77,7 +77,6 @@ glXGetFBConfigs_func glXGetFBConfigs;
 
 // glActiveTexture
 glActiveTexture_func glActiveTexture;
-glBlendColor_func glBlendColor;
 // framebuffer_object extension functions
 glIsRenderbuffer_func glIsRenderbuffer;
 glBindRenderbuffer_func glBindRenderbuffer;
@@ -417,7 +416,6 @@ void glResolveFunctions(OpenGLPlatformInterface platformInterface)
         glProgramLocalParameter4fARB = NULL;
         glGetProgramivARB = NULL;
     }
-    GL_RESOLVE_WITH_EXT(glBlendColor, glBlendColorARB);
     if (hasGLExtension("GL_ARB_vertex_buffer_object")) {
         // see http://www.opengl.org/registry/specs/ARB/vertex_buffer_object.txt
         GL_RESOLVE_WITH_EXT(glGenBuffers, glGenBuffersARB);
diff --git a/libkwineffects/kwinglutils_funcs.h b/libkwineffects/kwinglutils_funcs.h
index b2b7f5ba3f..f7dc50921e 100644
--- a/libkwineffects/kwinglutils_funcs.h
+++ b/libkwineffects/kwinglutils_funcs.h
@@ -225,8 +225,6 @@ extern KWIN_EXPORT glXGetFBConfigs_func glXGetFBConfigs;
 // glActiveTexture
 typedef void (*glActiveTexture_func)(GLenum);
 extern KWIN_EXPORT glActiveTexture_func glActiveTexture;
-typedef void (*glBlendColor_func)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
-extern KWIN_EXPORT glBlendColor_func glBlendColor;
 // framebuffer_object extension functions
 typedef GLboolean(*glIsRenderbuffer_func)(GLuint renderbuffer);
 typedef void (*glBindRenderbuffer_func)(GLenum target, GLuint renderbuffer);