diff --git a/tools/valgrind-webrtc/tsan_v2/suppressions.txt b/tools/valgrind-webrtc/tsan_v2/suppressions.txt
index c6ed649b2f..4d428be342 100644
--- a/tools/valgrind-webrtc/tsan_v2/suppressions.txt
+++ b/tools/valgrind-webrtc/tsan_v2/suppressions.txt
@@ -1,3 +1,6 @@
 # False positive in system wrappers.
 # See https://code.google.com/p/webrtc/issues/detail?id=300 for details.
 race:webrtc/system_wrappers/source/thread_posix.cc
+
+# https://code.google.com/p/webrtc/issues/detail?id=2259
+race:condition_variable_unittest