diff --git a/configure.ac b/configure.ac
index 713a118..98f9d3f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -27,6 +27,7 @@ dnl Check for standard header files
 AC_HEADER_STDC
 
 dnl configure the panel plugin
+XDT_CHECK_PACKAGE([LIBXFCEGUI4], [libxfcegui4-1.0], [4.3.20])
 XDT_CHECK_PACKAGE([LIBXFCE4PANEL], [libxfce4panel-1.0], [4.3.20])
 XDT_CHECK_PACKAGE([GTK], [gtk+-2.0], [2.12.0])
 
diff --git a/panel-plugin/Makefile.am b/panel-plugin/Makefile.am
index 141d8a6..595c61f 100644
--- a/panel-plugin/Makefile.am
+++ b/panel-plugin/Makefile.am
@@ -3,9 +3,11 @@ plugin_PROGRAMS = xfce4-cpugraph-plugin
 
 xfce4_cpugraph_plugin_CFLAGS =					\
 	-DPACKAGE_LOCALE_DIR=\"$(localedir)\"			\
+	@LIBXFCEGUI4_CFLAGS@					\
 	@LIBXFCE4PANEL_CFLAGS@
 
 xfce4_cpugraph_plugin_LDADD =					\
+	@LIBXFCEGUI4_LIBS@					\
 	@LIBXFCE4PANEL_LIBS@
 
 xfce4_cpugraph_plugin_SOURCES =                                 \
diff --git a/panel-plugin/cpu.c b/panel-plugin/cpu.c
index 8ecdf22..ba53dc6 100644
--- a/panel-plugin/cpu.c
+++ b/panel-plugin/cpu.c
@@ -3,6 +3,7 @@
 #include "mode.h"
 #include "properties.h"
 
+#include <libxfcegui4/libxfcegui4.h>
 #include <libxfce4panel/xfce-hvbox.h>
 
 static void cpugraph_construct( XfcePanelPlugin *plugin );