diff --git a/pkgs/development/python-modules/johnnycanencrypt/default.nix b/pkgs/development/python-modules/johnnycanencrypt/default.nix
index 460b0cddf61..d2d4719dab4 100644
--- a/pkgs/development/python-modules/johnnycanencrypt/default.nix
+++ b/pkgs/development/python-modules/johnnycanencrypt/default.nix
@@ -39,7 +39,7 @@ buildPythonPackage rec {
 
   cargoSha256 = "0ifvpdizcdp2c5x2x2j1bhhy5a75q0pk7a63dmh52mlpmh45fy6r";
 
-  LIBCLANG_PATH = llvmPackages.libclang + "/lib";
+  LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib";
 
   propagatedBuildInputs = [
     requests