diff --git a/src/xfaces.c b/src/xfaces.c
index 2bf24da7fc9..b9fb7c0ac1e 100644
--- a/src/xfaces.c
+++ b/src/xfaces.c
@@ -4824,7 +4824,7 @@ face_for_font (struct frame *f, Lisp_Object font_object,
                struct face *base_face)
 {
   struct face_cache *cache = FRAME_FACE_CACHE (f);
-  unsigned hash;
+  uintptr_t hash;
   int i;
   struct face *face;