diff --git a/llvm/test/tools/llvm-lib/ecsymbols.test b/llvm/test/tools/llvm-lib/ecsymbols.test
--- a/llvm/test/tools/llvm-lib/ecsymbols.test
+++ b/llvm/test/tools/llvm-lib/ecsymbols.test
@@ -1,5 +1,6 @@
 # Check that llvm-lib doesn't list the members of an archive which contains the
 # special member /<ECSYMBOLS>/.
+# UNSUPPORTED: system-zos
 # REQUIRES: aarch64-registered-target
 
 # RUN: yaml2obj %s -o %t.lib