diff --git a/pkgs/development/compilers/llvm/5/llvm/default.nix b/pkgs/development/compilers/llvm/5/llvm/default.nix
index 31b88098c83a8..219ae190e955b 100644
--- a/pkgs/development/compilers/llvm/5/llvm/default.nix
+++ b/pkgs/development/compilers/llvm/5/llvm/default.nix
@@ -82,6 +82,8 @@ stdenv.mkDerivation (rec {
       sha256 = "0zjfjgavqzi2ypqwqnlvy6flyvdz8hi1anwv0ybwnm2zqixg7za3";
       stripLen = 1;
     })
+
+    ../../llvm-7-musl.patch
   ] ++ lib.optional enablePolly ./gnu-install-dirs-polly.patch;
 
   postPatch = optionalString stdenv.isDarwin ''