diff --git a/test/Bindings/llvm-c/lit.local.cfg b/test/Bindings/llvm-c/lit.local.cfg
index 270a7f2365a..d83ebeed8e1 100644
--- a/test/Bindings/llvm-c/lit.local.cfg
+++ b/test/Bindings/llvm-c/lit.local.cfg
@@ -1,3 +1,5 @@
 targets = set(config.root.targets_to_build.split())
-if not (targets & set(["X86", "ARM"])):
+if not "X86" in targets:
+    config.unsupported = True
+if not "ARM" in targets:
     config.unsupported = True