diff -ur xfce4-sensors-plugin-1.0.0.orig/src/Makefile.am xfce4-sensors-plugin-1.0.0/src/Makefile.am
--- xfce4-sensors-plugin-1.0.0.orig/src/Makefile.am	2011-05-02 11:31:07.000000000 +0200
+++ xfce4-sensors-plugin-1.0.0/src/Makefile.am	2011-05-02 11:31:59.000000000 +0200
@@ -35,7 +35,7 @@
 # @LIBXFCE4PANEL_CFLAGS@
 
 xfce4_sensors_LDFLAGS = \
-	--no-undefined		\
+	-Wl,--no-undefined		\
 	@PLATFORM_LDFLAGS@
 
 xfce4_sensors_LDADD = \