--- a/pommed/mactel/nv8600mgt_backlight.c
+++ b/pommed/mactel/nv8600mgt_backlight.c
@@ -48,7 +48,7 @@
 #include "../dbus.h"
 
 
-struct _lcd_bck_info lcd_bck_info;
+extern struct _lcd_bck_info lcd_bck_info;
 
 
 static int nv8600mgt_inited = 0;
--- a/pommed/mactel/x1600_backlight.c
+++ b/pommed/mactel/x1600_backlight.c
@@ -45,7 +45,7 @@
 #include "../dbus.h"
 
 
-struct _lcd_bck_info lcd_bck_info;
+extern struct _lcd_bck_info lcd_bck_info;
 
 static int fd = -1;
 static char *memory = NULL;