diff --git a/sys/i386/include/pmap.h b/sys/i386/include/pmap.h
index 66e17a96424b..00a3f7baed0f 100644
--- a/sys/i386/include/pmap.h
+++ b/sys/i386/include/pmap.h
@@ -283,6 +283,8 @@ pmap_kextract(vm_offset_t va)
 	}
 	return pa;
 }
+
+#define PT_UPDATES_FLUSH()
 #endif
 
 #if defined(PAE) && !defined(XEN)