diff --git a/tools_libyuv/valgrind/memcheck/suppressions.txt b/tools_libyuv/valgrind/memcheck/suppressions.txt
index 3ad0c8ccc..3f0f6d44f 100644
--- a/tools_libyuv/valgrind/memcheck/suppressions.txt
+++ b/tools_libyuv/valgrind/memcheck/suppressions.txt
@@ -2,4 +2,20 @@
 # It acts as a place holder for future additions for this project.
 # It must exist for the Python wrapper script to work properly.
 
+# There are two of suppressions in this file.
+# 1. third_party libraries
+# 2. libyuv stuff
+# 3. libjingle stuff (talk folder)
+#-----------------------------------------------------------------------
 
+# third_party libraries
+{
+   bug_729
+   Memcheck:Free
+   fun:_ZdaPv
+   ...
+   fun:_ZN7testing8internal12UnitTestImplD1Ev
+   ...
+}
+
+# libyuv (empty so far)