diff --git a/webrtc/base/sharedexclusivelock_unittest.cc b/webrtc/base/sharedexclusivelock_unittest.cc
index de1dbe8122..42334af755 100644
--- a/webrtc/base/sharedexclusivelock_unittest.cc
+++ b/webrtc/base/sharedexclusivelock_unittest.cc
@@ -131,7 +131,8 @@ class SharedExclusiveLockTest
   int value_;
 };
 
-TEST_F(SharedExclusiveLockTest, TestSharedShared) {
+// Flaky: https://code.google.com/p/webrtc/issues/detail?id=3318
+TEST_F(SharedExclusiveLockTest, DISABLED_TestSharedShared) {
   int value0, value1;
   bool done0, done1;
   ReadTask reader0(shared_exclusive_lock_.get(), &value_, &done0);