--- applets/brightness/brightness-applet.c
+++ applets/brightness/brightness-applet.c
@@ -117,7 +117,7 @@
 {
 	GError  *error = NULL;
 	gboolean ret;
-	guint policy_brightness;
+	int policy_brightness;
 
 	if (applet->proxy == NULL) {
 		printf ("WARNING: not connected\n");
@@ -133,7 +133,7 @@
 		g_error_free (error);
 	}
 	if (ret == TRUE) {
-		applet->level = policy_brightness;
+		applet->level = (guint)policy_brightness;
 	} else {
 		/* abort as the DBUS method failed */
 		printf ("WARNING: GetBrightness failed!\n");
--- src/gpm-brightness-lcd.c
+++ src/gpm-brightness-lcd.c
@@ -97,7 +97,7 @@
 
 	ret = dbus_g_proxy_call (proxy, "GetBrightness", &error,
 				 G_TYPE_INVALID,
-				 G_TYPE_UINT, &level,
+				 G_TYPE_INT, &level,
 				 G_TYPE_INVALID);
 
 	if (brightness_level_hw != NULL) {
@@ -157,7 +157,7 @@
 	ret = dbus_g_proxy_call (proxy, "SetBrightness", &error,
 				 G_TYPE_INT, (int)brightness_level_hw,
 				 G_TYPE_INVALID,
-				 G_TYPE_UINT, &retval,
+				 G_TYPE_INT, &retval,
 				 G_TYPE_INVALID);
 	/* retval is ignored, the HAL API is broken... */