http://bugzilla.xfce.org/show_bug.cgi?id=6620
http://bugs.gentoo.org/show_bug.cgi?id=331503

--- configure.ac
+++ configure.ac
@@ -32,6 +32,7 @@
 
 dnl configure the panel plugin
 XDT_CHECK_PACKAGE([LIBXFCE4PANEL], [libxfce4panel-1.0], [4.3.22])
+XDT_CHECK_PACKAGE([LIBXFCEGUI4], [libxfcegui4-1.0], [4.3.22])
 
 dnl Translations
 XDT_I18N([ca cs en_GB eu fr pl pt_PT sq])
--- panel-plugin/Makefile.am
+++ panel-plugin/Makefile.am
@@ -3,10 +3,12 @@
 
 xfce4_genmon_plugin_CFLAGS =					\
 	-DPACKAGE_LOCALE_DIR=\"$(localedir)\"			\
-	@LIBXFCE4PANEL_CFLAGS@
+	@LIBXFCE4PANEL_CFLAGS@					\
+	@LIBXFCEGUI4_CFLAGS@
 
 xfce4_genmon_plugin_LDADD =					\
-	@LIBXFCE4PANEL_LIBS@
+	@LIBXFCE4PANEL_LIBS@					\
+	@LIBXFCEGUI4_LIBS@
 
 xfce4_genmon_plugin_SOURCES =	\
 	main.c			\