diff --git a/include/buf0buf.ic b/include/buf0buf.ic
index 752a40676b9..ed228a09065 100644
--- a/include/buf0buf.ic
+++ b/include/buf0buf.ic
@@ -900,7 +900,7 @@ buf_page_hash_get(
 	if (bpage) {
 		ut_a(buf_page_in_file(bpage));
 		ut_ad(bpage->in_page_hash);
-		ut_ad(bpage->in_zip_hash);
+		ut_ad(!bpage->in_zip_hash);
 		UNIV_MEM_ASSERT_RW(bpage, sizeof *bpage);
 	}