diff --git a/NEWS b/NEWS
index 50eb77686..2c145191e 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,6 @@
 ver 0.18.7 (not yet released)
+* daemon: don't initialize supplementary groups when already running
+  as the configured user
 
 ver 0.18.6 (2013/12/24)
 * input
diff --git a/src/Daemon.cxx b/src/Daemon.cxx
index d40c49d5d..557c47777 100644
--- a/src/Daemon.cxx
+++ b/src/Daemon.cxx
@@ -116,7 +116,11 @@ daemonize_set_user(void)
 	/* init supplementary groups
 	 * (must be done before we change our uid)
 	 */
-	if (!had_group && initgroups(user_name, user_gid) == -1) {
+	if (!had_group &&
+	    /* no need to set the new user's supplementary groups if
+	       we are already this user */
+	    user_uid != getuid() &&
+	    initgroups(user_name, user_gid) == -1) {
 		FormatFatalSystemError("Failed to set supplementary groups "
 				       "of user \"%s\"",
 				       user_name);