--- a/sys/dev/agp/agp.c
+++ b/sys/dev/agp/agp.c
@@ -606,7 +606,7 @@
 {
 	struct agp_softc *sc = device_get_softc(dev);
 	vm_page_t m;
-	int i;
+	vm_ooffset_t i;
 
 	lockmgr(&sc->as_lock, LK_EXCLUSIVE);