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-rw-r--r--theories/ZArith/fast_integer.v1
1 files changed, 1 insertions, 0 deletions
diff --git a/theories/ZArith/fast_integer.v b/theories/ZArith/fast_integer.v
index a25519b255..059e79eb3a 100644
--- a/theories/ZArith/fast_integer.v
+++ b/theories/ZArith/fast_integer.v
@@ -13,6 +13,7 @@
(***********************************************************)
Require Export BinPos.
+Require BinNat.
Require Le.
Require Lt.
Require Gt.