diff --git a/clang/test/Modules/relative-resource-dir.m b/clang/test/Modules/relative-resource-dir.m
index 2efc61259fd78..e0d1b6d221d10 100644
--- a/clang/test/Modules/relative-resource-dir.m
+++ b/clang/test/Modules/relative-resource-dir.m
@@ -1,3 +1,4 @@
+// UNSUPPORTED: -zos, -aix
 // REQUIRES: shell
 
 // RUN: EXPECTED_RESOURCE_DIR=`%clang -print-resource-dir` && \