diff --git a/degesch.c b/degesch.c
index e90d393..fad77f3 100644
--- a/degesch.c
+++ b/degesch.c
@@ -4679,12 +4679,36 @@ irc_handle_rpl_namreply (struct server *s, const struct irc_message *msg)
 		split_str_ignore_empty (nicks, ' ', &channel->names_buf);
 }
 
+static void
+irc_sync_channel_user (struct server *s, struct channel *channel,
+	const char *nickname, const char *prefixes)
+{
+	struct user *user = irc_get_or_make_user (s, nickname);
+	struct channel_user *channel_user =
+		irc_channel_get_user (channel, user);
+	if (!channel_user)
+	{
+		irc_channel_link_user (channel, user, prefixes);
+		return;
+	}
+
+	user_unref (user);
+
+	// If our idea of the user's modes disagrees with what the server's
+	// sent us (the most powerful modes differ), use the latter one
+	if (channel_user->prefixes.str[0] != prefixes[0])
+	{
+		str_reset (&channel_user->prefixes);
+		str_append (&channel_user->prefixes, prefixes);
+	}
+}
+
 static void
 irc_process_names (struct server *s, struct channel *channel)
 {
-	struct str_map map;
-	str_map_init (&map);
-	map.key_xfrm = s->irc_strxfrm;
+	struct str_map present;
+	str_map_init (&present);
+	present.key_xfrm = s->irc_strxfrm;
 
 	struct str_vector *updates = &channel->names_buf;
 	for (size_t i = 0; i < updates->len; i++)
@@ -4694,38 +4718,19 @@ irc_process_names (struct server *s, struct channel *channel)
 		const char *nickname = item + n_prefixes;
 
 		// Store the nickname in a hashset
-		str_map_set (&map, nickname, (void *) 1);
+		str_map_set (&present, nickname, (void *) 1);
 
-		char prefixes[n_prefixes + 1];
-		memcpy (prefixes, item, n_prefixes);
-		prefixes[n_prefixes] = '\0';
-
-		struct user *user = irc_get_or_make_user (s, nickname);
-		struct channel_user *channel_user =
-			irc_channel_get_user (channel, user);
-		if (!channel_user)
-		{
-			irc_channel_link_user (channel, user, prefixes);
-			continue;
-		}
-
-		user_unref (user);
-
-		// If our idea of the user's modes disagrees with what the server's
-		// sent us (the most powerful modes differ), use the latter one
-		if (channel_user->prefixes.str[0] == prefixes[0])
-			continue;
-
-		str_reset (&channel_user->prefixes);
-		str_append (&channel_user->prefixes, prefixes);
+		char *prefixes = xstrndup (item, n_prefixes);
+		irc_sync_channel_user (s, channel, nickname, prefixes);
+		free (prefixes);
 	}
 
 	// Get rid of channel users missing from "updates"
 	LIST_FOR_EACH (struct channel_user, iter, channel->users)
-		if (!str_map_find (&map, iter->user->nickname))
+		if (!str_map_find (&present, iter->user->nickname))
 			irc_channel_unlink_user (channel, iter);
 
-	str_map_free (&map);
+	str_map_free (&present);
 	str_vector_reset (&channel->names_buf);
 
 	struct str_vector v;