diff --git a/pkgs/development/compilers/llvm/9/clang/default.nix b/pkgs/development/compilers/llvm/9/clang/default.nix
index bf9b1a32a834..925deaaa63dd 100644
--- a/pkgs/development/compilers/llvm/9/clang/default.nix
+++ b/pkgs/development/compilers/llvm/9/clang/default.nix
@@ -73,7 +73,8 @@ let
       moveToOutput "lib/libclang.*" "$lib"
       moveToOutput "lib/libclang-cpp.*" "$lib"
       substituteInPlace $out/lib/cmake/clang/ClangTargets-release.cmake \
-          --replace "\''${_IMPORT_PREFIX}/lib/libclang." "$lib/lib/libclang."
+          --replace "\''${_IMPORT_PREFIX}/lib/libclang." "$lib/lib/libclang." \
+          --replace "\''${_IMPORT_PREFIX}/lib/libclang-cpp." "$lib/lib/libclang-cpp."
 
       mkdir -p $python/bin $python/share/clang/
       mv $out/bin/{git-clang-format,scan-view} $python/bin