diff --git a/lib/Haskell/Extra/Dec.agda b/lib/Haskell/Extra/Dec.agda
index 311ed132..32fc3df7 100644
--- a/lib/Haskell/Extra/Dec.agda
+++ b/lib/Haskell/Extra/Dec.agda
@@ -11,7 +11,7 @@ Reflects P False = P → ⊥
 
 Dec : ∀ {ℓ} → @0 Set ℓ → Set ℓ
 Dec P = ∃ Bool (Reflects P)
-{-# COMPILE AGDA2HS Dec #-}
+{-# COMPILE AGDA2HS Dec inline #-}
 
 mapDec : @0 (a → b)
        → @0 (b → a)