diff --git a/theories/bi/notation.v b/theories/bi/notation.v
index 9a2a3656a129a247b6e7327cb64a67b7fda7e7a7..5322e6d71455e81d56797cb4d7cc4fb529a66e86 100644
--- a/theories/bi/notation.v
+++ b/theories/bi/notation.v
@@ -14,6 +14,8 @@ Reserved Notation "'⌜' φ '⌝'" (at level 1, φ at level 200, format "⌜ φ
 Reserved Notation "P ∗ Q" (at level 80, right associativity).
 Reserved Notation "P -∗ Q" (at level 99, Q at level 200, right associativity).
 
+Reserved Notation "⎡ P ⎤".
+
 (** Modalities *)
 Reserved Notation "'<pers>' P" (at level 20, right associativity).
 Reserved Notation "'<pers>?' p P" (at level 20, p at level 9, P at level 20,