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diff --git a/test-suite/bugs/closed/shouldsucceed/1939.v b/test-suite/bugs/closed/shouldsucceed/1939.v
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+Require Import Setoid Program.Basics.
+
+ Parameter P : nat -> Prop.
+ Parameter R : nat -> nat -> Prop.
+
+ Add Parametric Morphism : P
+   with signature R ++> impl as PM1.
+ Admitted.
+
+ Add Parametric Morphism : P
+   with signature R --> impl as PM2.
+ Admitted.
+
+ Goal forall x y, R x y -> P y -> P x.
+ Proof.
+   intros x y H1 H2.
+   rewrite H1.
+   auto.
+ Qed.
+\ No newline at end of file