diff --git a/pkgs/development/compilers/llvm/3.9/llvm.nix b/pkgs/development/compilers/llvm/3.9/llvm.nix
index b64cf4fed5b..64996ced54f 100644
--- a/pkgs/development/compilers/llvm/3.9/llvm.nix
+++ b/pkgs/development/compilers/llvm/3.9/llvm.nix
@@ -1,5 +1,6 @@
 { stdenv
 , fetch
+, fetchpatch
 , perl
 , groff
 , cmake
@@ -45,6 +46,13 @@ in stdenv.mkDerivation rec {
   propagatedBuildInputs = [ ncurses zlib ];
 
   postPatch = ""
+  + ''
+    patch -p1 --reverse < ${fetchpatch {
+      name = "fix-red-icons.diff"; # https://bugs.freedesktop.org/show_bug.cgi?id=99078
+      url = https://github.com/llvm-mirror/llvm/commit/c280d74837d8.diff;
+      sha256 = "11sq86spw41v72f676igksapdlsgh7fiqp5qkkmgfj0ndqcn9skf";
+    }}
+  ''
   # hacky fix: New LLVM releases require a newer OS X SDK than
   # 10.9. This is a temporary measure until nixpkgs darwin support is
   # updated.