diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index 877823ba82f10ba566e4e4f6664f79337d3f0323..1f39424a3f71a7c8dc8716d7d640e338fa4935d2 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -2910,7 +2910,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 			gRlvSphereProgram.createShader(NULL, NULL);
 		}
 		// [/RLV:KB]
-
+#ifndef LL_DARWIN
 		if (gGLManager.mGLVersion >= 4.59f)
 		{
 			gDeferredPostCASProgram.mName = "Contrast Adaptive Sharpen Shader";
@@ -2935,6 +2935,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 			gDeferredPostTonemapLPMProgram.addPermutation("TONEMAP_METHOD", std::to_string(ALRenderUtil::TONEMAP_AMD));
 			gDeferredPostTonemapLPMProgram.createShader(NULL, NULL); // Ignore return value for this shader
 		}
+#endif
 	}
 
 	return success;