diff --git a/theories/base_logic/lib/iprop.v b/theories/base_logic/lib/iprop.v
index cb59e866ba938f0cbce3120d0a5df2f7f4e36b5a..67424971df464c52d0ee7373366a8b8d591d855f 100644
--- a/theories/base_logic/lib/iprop.v
+++ b/theories/base_logic/lib/iprop.v
@@ -63,7 +63,6 @@ Module gFunctors.
   Definition app (Σ1 Σ2 : gFunctors) : gFunctors :=
     existT (projT1 Σ1 + projT1 Σ2) (fin_plus_inv _ (projT2 Σ1) (projT2 Σ2)).
 End gFunctors.
-Typeclasses Opaque gFunctors.singleton gFunctors.app.
 
 Coercion gFunctors.singleton : gFunctor >-> gFunctors.
 Notation "#[ ]" := gFunctors.nil (format "#[ ]").