diff --git a/theories/lifetime/model/definitions.v b/theories/lifetime/model/definitions.v
index 5b0453acbea8ca315a54ab601267fc682b811a67..804a287f012764cf3da31b0f5592380d059c12b3 100644
--- a/theories/lifetime/model/definitions.v
+++ b/theories/lifetime/model/definitions.v
@@ -1,5 +1,4 @@
 From iris.algebra Require Import csum auth frac gmap agree gset.
-From iris.algebra Require Import csum auth frac agree gset.
 From iris.base_logic Require Import big_op.
 From iris.base_logic.lib Require Import boxes.
 From lrust.lifetime Require Export lifetime_sig.