diff --git a/pkgs/by-name/in/intel-llvm/unwrapped.nix b/pkgs/by-name/in/intel-llvm/unwrapped.nix
index f01144744b3a..269205435786 100644
--- a/pkgs/by-name/in/intel-llvm/unwrapped.nix
+++ b/pkgs/by-name/in/intel-llvm/unwrapped.nix
@@ -57,7 +57,11 @@ let
         cp $out/bin/clang-${llvmMajorVersion} $out/bin/clang
         cp $out/bin/clang-${llvmMajorVersion} $out/bin/clang++
       '';
-      passthru.isClang = true;
+      passthru = {
+        isClang = true;
+        langC = true;
+        langCC = true;
+      };
     }
   );
 
@@ -296,6 +300,8 @@ stdenv.mkDerivation (finalAttrs: {
 
   passthru = {
     isClang = true;
+    langC = true;
+    langCC = true;
 
     inherit unified-runtime;