diff --git a/pkgs/development/python-modules/cffi/default.nix b/pkgs/development/python-modules/cffi/default.nix
index bbdd6bf08cfc2..91e31a9fefd0a 100644
--- a/pkgs/development/python-modules/cffi/default.nix
+++ b/pkgs/development/python-modules/cffi/default.nix
@@ -69,7 +69,10 @@ else
     # The tests use -Werror but with python3.6 clang detects some unreachable code.
     env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-unused-command-line-argument -Wno-unreachable-code -Wno-c++11-narrowing";
 
-    doCheck = !(stdenv.hostPlatform.isMusl || stdenv.hostPlatform.useLLVM or false);
+    doCheck =
+      !(
+        stdenv.hostPlatform.isMusl || (stdenv.hostPlatform.cc == "clang" && !stdenv.hostPlatform.isDarwin)
+      );
 
     nativeCheckInputs = [ pytestCheckHook ];