diff --git a/ChangeLog b/ChangeLog
index 20b0e4713..6806e3ada 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -61,6 +61,7 @@ Version 0.3.7 (under dev!)
   nicklist_get_next_item
 * alias: add default alias umode => /mode $nick
 * aspell: fix URL detection (do not check spelling of URLs) (bug #34040)
+* irc: fix memory leak when a server is deleted
 * irc: add option "cap" in servers to enable capabilities on connection
 * irc: add signal "irc_server_opened"
 * irc: add signal "xxx,irc_out1_yyy" and modifier "irc_out1_xxx" (outgoing
diff --git a/src/plugins/irc/irc-server.c b/src/plugins/irc/irc-server.c
index 8a2ef5a98..31fa2b5b2 100644
--- a/src/plugins/irc/irc-server.c
+++ b/src/plugins/irc/irc-server.c
@@ -1181,6 +1181,8 @@ irc_server_free_data (struct t_irc_server *server)
         free (server->prefix_modes);
     if (server->prefix_chars)
         free (server->prefix_chars);
+    if (server->chantypes)
+        free (server->chantypes);
     if (server->away_message)
         free (server->away_message);
     if (server->cmd_list_regexp)