diff --git a/src/irc/irc-commands.c b/src/irc/irc-commands.c
index 3d87a4794..307b18263 100644
--- a/src/irc/irc-commands.c
+++ b/src/irc/irc-commands.c
@@ -1993,7 +1993,7 @@ irc_cmd_recv_topic (t_irc_server *server, char *host, char *arguments)
     if (pos)
         pos[0] = '\0';
     
-    if (string_is_channel (arguments))
+    if (!string_is_channel (arguments))
     {
         gui_printf (server->window,
                     _("%s \"topic\" command received without channel\n"),
diff --git a/weechat/src/irc/irc-commands.c b/weechat/src/irc/irc-commands.c
index 3d87a4794..307b18263 100644
--- a/weechat/src/irc/irc-commands.c
+++ b/weechat/src/irc/irc-commands.c
@@ -1993,7 +1993,7 @@ irc_cmd_recv_topic (t_irc_server *server, char *host, char *arguments)
     if (pos)
         pos[0] = '\0';
     
-    if (string_is_channel (arguments))
+    if (!string_is_channel (arguments))
     {
         gui_printf (server->window,
                     _("%s \"topic\" command received without channel\n"),