diff --git a/clang/test/Modules/merge-objc-interface.m b/clang/test/Modules/merge-objc-interface.m
--- a/clang/test/Modules/merge-objc-interface.m
+++ b/clang/test/Modules/merge-objc-interface.m
@@ -1,3 +1,4 @@
+// UNSUPPORTED: -zos, -aix
 // RUN: rm -rf %t
 // RUN: split-file %s %t
 // RUN: %clang_cc1 -emit-llvm -o %t/test.bc -F%t/Frameworks %t/test.m \