diff --git a/compiler-rt/test/tsan/vfork.cpp b/compiler-rt/test/tsan/vfork.cpp
index 2d669b305a9d..1e34a568fb5a 100644
--- a/compiler-rt/test/tsan/vfork.cpp
+++ b/compiler-rt/test/tsan/vfork.cpp
@@ -1,4 +1,6 @@
 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
+// UNSUPPORTED: ios
+
 #include <pthread.h>
 #include <stdio.h>
 #include <stdlib.h>