diff --git a/config.m4 b/config.m4
index d4af0cf..c277cca 100644
--- a/config.m4
+++ b/config.m4
@@ -332,6 +332,7 @@
     src/core/ext/filters/client_channel/backup_poller.cc \
     src/core/ext/filters/client_channel/channel_connectivity.cc \
     src/core/ext/filters/client_channel/client_channel.cc \
+    src/core/ext/filters/client_channel/client_channel_channelz.cc \
     src/core/ext/filters/client_channel/client_channel_factory.cc \
     src/core/ext/filters/client_channel/client_channel_plugin.cc \
     src/core/ext/filters/client_channel/connector.cc \