diff --git a/ChangeLog.md b/ChangeLog.md
index b8e2766..5608088 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -13,6 +13,8 @@ repository history](https://github.com/ddclient/ddclient/commits/master).
   * The default web service for `--webv4` and `--webv6` has changed from Google
     Domains (which is shutting down) to ipify.
     [5b104ad1](https://github.com/ddclient/ddclient/commit/5b104ad116c023c3760129cab6e141f04f72b406)
+  * All log messages are now written to STDERR, not a mix of STDOUT and STDERR.
+    [#676](https://github.com/ddclient/ddclient/pull/676)
 
 ### New features
 
diff --git a/ddclient.in b/ddclient.in
index 52a03c6..3ae7cdb 100755
--- a/ddclient.in
+++ b/ddclient.in
@@ -2420,15 +2420,15 @@ sub logmsg {
         }
     }
 }
-sub msg     { logmsg(fh => *STDOUT,                                sprintf(shift, @_)); }
-sub verbose { logmsg(fh => *STDOUT, email => 1, pfx => pop,        sprintf(shift, @_)) if opt('verbose'); }
-sub info    { logmsg(fh => *STDOUT, email => 1, pfx => 'INFO:',    sprintf(shift, @_)) if opt('verbose'); }
-sub debug   { logmsg(fh => *STDOUT,             pfx => 'DEBUG:',   sprintf(shift, @_)) if opt('debug'); }
-sub debug2  { logmsg(fh => *STDOUT,             pfx => 'DEBUG:',   sprintf(shift, @_)) if opt('debug') && opt('verbose'); }
-sub warning { logmsg(               email => 1, pfx => 'WARNING:', sprintf(shift, @_)); }
-sub fatal   { logmsg(               email => 1, pfx => 'FATAL:',   sprintf(shift, @_)); sendmail(); exit(1); }
-sub success { logmsg(fh => *STDOUT, email => 1, pfx => 'SUCCESS:', sprintf(shift, @_)); }
-sub failed  { logmsg(               email => 1, pfx => 'FAILED:',  sprintf(shift, @_)); $result = 'FAILED'; }
+sub msg     { logmsg(                               sprintf(shift, @_)); }
+sub verbose { logmsg(email => 1, pfx => pop,        sprintf(shift, @_)) if opt('verbose'); }
+sub info    { logmsg(email => 1, pfx => 'INFO:',    sprintf(shift, @_)) if opt('verbose'); }
+sub debug   { logmsg(            pfx => 'DEBUG:',   sprintf(shift, @_)) if opt('debug'); }
+sub debug2  { logmsg(            pfx => 'DEBUG:',   sprintf(shift, @_)) if opt('debug') && opt('verbose'); }
+sub warning { logmsg(email => 1, pfx => 'WARNING:', sprintf(shift, @_)); }
+sub fatal   { logmsg(email => 1, pfx => 'FATAL:',   sprintf(shift, @_)); sendmail(); exit(1); }
+sub success { logmsg(email => 1, pfx => 'SUCCESS:', sprintf(shift, @_)); }
+sub failed  { logmsg(email => 1, pfx => 'FAILED:',  sprintf(shift, @_)); $result = 'FAILED'; }
 sub prettytime { return scalar(localtime(shift)); }
 
 sub prettyinterval {