diff --git a/library/data/nat/default.lean b/library/data/nat/default.lean
index 359ac4df1..8d81f519f 100644
--- a/library/data/nat/default.lean
+++ b/library/data/nat/default.lean
@@ -3,4 +3,4 @@ Copyright (c) 2014 Microsoft Corporation. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Author: Jeremy Avigad
 -/
-import .basic .order .sub .div .gcd .bquant .sqrt .pairing .power .choose
+import .basic .order .sub .div .gcd .bquant .sqrt .pairing .power .choose .fact .primes