diff --git a/pkgs/development/compilers/llvm/3.9/llvm.nix b/pkgs/development/compilers/llvm/3.9/llvm.nix
index c325da3e737..fa9b9560225 100644
--- a/pkgs/development/compilers/llvm/3.9/llvm.nix
+++ b/pkgs/development/compilers/llvm/3.9/llvm.nix
@@ -94,7 +94,7 @@ in stdenv.mkDerivation rec {
     substitute '${./llvm-outputs.patch}' ./llvm-outputs.patch --subst-var lib
     patch -p1 < ./llvm-outputs.patch
   ''
-  + stdenv.lib.optionalString (stdenv ? glibc) ''
+  + ''
     (
       cd projects/compiler-rt
       patch -p1 < ${