diff --git a/src/testdir/test_channel.vim b/src/testdir/test_channel.vim
index e00cc50..48ab69c 100644
--- a/src/testdir/test_channel.vim
+++ b/src/testdir/test_channel.vim
@@ -1344,4 +1344,4 @@
 endfunc
 
 " Uncomment this to see what happens, output is in src/testdir/channellog.
- call ch_logfile('channellog', 'w')
+" call ch_logfile('channellog', 'w')