diff --git a/src/common-setup.h b/src/common-setup.h
index ac7b8943..bc0e5e6e 100644
--- a/src/common-setup.h
+++ b/src/common-setup.h
@@ -136,6 +136,7 @@ extern gint proxy_port;
 extern gchar *proxy_string;
 
 /* appearance */
+extern gboolean toggle_buggy_gtkthemes;
 extern gboolean toggle_use_itext;
 extern gboolean toggle_background_transparent;
 extern gint panel_max_channels;