diff --git a/pkgs/development/compilers/edk2/default.nix b/pkgs/development/compilers/edk2/default.nix
index d5160140486..8ce4322a12e 100644
--- a/pkgs/development/compilers/edk2/default.nix
+++ b/pkgs/development/compilers/edk2/default.nix
@@ -61,7 +61,7 @@ edk2 = buildStdenv.mkDerivation {
   ${"GCC5_${targetArch}_PREFIX"}=stdenv.cc.targetPrefix;
 
   makeFlags = [ "-C BaseTools" ]
-    ++ lib.optionals (stdenv.cc.isClang) [ "BUILD_CC=clang BUILD_CXX=clang++ BUILD_AS=clang" ];
+    ++ lib.optionals (stdenv.cc.isClang) [ "CXX=llvm BUILD_AR=ar BUILD_CC=clang BUILD_CXX=clang++ BUILD_AS=clang BUILD_LD=ld" ];
 
   NIX_CFLAGS_COMPILE = "-Wno-return-type" + lib.optionalString (stdenv.cc.isGNU) " -Wno-error=stringop-truncation";