diff --git a/pkgs/development/tools/clang-tools/wrapper b/pkgs/development/tools/clang-tools/wrapper
index eebc152d11b..1008023fdc0 100755
--- a/pkgs/development/tools/clang-tools/wrapper
+++ b/pkgs/development/tools/clang-tools/wrapper
@@ -19,9 +19,9 @@ buildcpath() {
 }
 
 export CPATH=${CPATH}${CPATH:+':'}$(buildcpath ${NIX_CFLAGS_COMPILE} \
-                                               $(<@clang@/nix-support/libc-cflags))
+                                               $(<@clang@/nix-support/libc-cflags)):@clang@/resource-root/include
 export CPLUS_INCLUDE_PATH=${CPLUS_INCLUDE_PATH}${CPLUS_INCLUDE_PATH:+':'}$(buildcpath ${NIX_CFLAGS_COMPILE} \
                                                                                       $(<@clang@/nix-support/libcxx-cxxflags) \
-                                                                                      $(<@clang@/nix-support/libc-cflags))
+                                                                                      $(<@clang@/nix-support/libc-cflags)):@clang@/resource-root/include
 
 exec -a "$0" @unwrapped@/bin/$(basename $0) "$@"