diff --git a/theories/algebra/auth.v b/theories/algebra/auth.v
index 72655d98556c61b309979a49c0f1128766d4ff41..898dc03abd000bd624dcd396fedd33e2941d2646 100644
--- a/theories/algebra/auth.v
+++ b/theories/algebra/auth.v
@@ -8,6 +8,9 @@ Add Printing Constructor auth.
 Arguments Auth {_} _ _.
 Arguments authoritative {_} _.
 Arguments auth_own {_} _.
+Instance: Params (@Auth) 1.
+Instance: Params (@authoritative) 1.
+Instance: Params (@auth_own) 1.
 Notation "â—¯ a" := (Auth None a) (at level 20).
 Notation "● a" := (Auth (Excl' a) ∅) (at level 20).