diff --git a/llvm/test/tools/llvm-ar/error-opening-directory.test b/llvm/test/tools/llvm-ar/error-opening-directory.test
--- a/llvm/test/tools/llvm-ar/error-opening-directory.test
+++ b/llvm/test/tools/llvm-ar/error-opening-directory.test
@@ -1,6 +1,6 @@
-## Unsupported on FreeBSD as FreeBSD 12 and earlier allow reading directories
-## by default.
-# UNSUPPORTED: system-freebsd
+## Unsupported on AIX and FreeBSD as AIX and FreeBSD 12 and earlier allow
+## reading directories by default.
+# UNSUPPORTED: system-freebsd, system-aix
 
 # RUN: rm -rf %t && mkdir -p %t