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diff --git a/test-suite/bugs/opened/3948.v b/test-suite/bugs/opened/3948.v
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+Module Type S.
+Parameter t : Type.
+End S.
+
+Module Bar(X : S).
+Proof.
+  Definition elt := X.t.
+  Axiom fold : elt.
+End Bar.
+
+Module Make (X: S) := Bar(X).
+
+Declare Module X : S.
+
+Module Type Interface.
+  Parameter constant : unit.
+End Interface.
+
+Module DepMap : Interface.
+  Module Dom := Make(X).
+  Definition constant : unit :=
+    let _ := @Dom.fold in tt.
+End DepMap.
+
+Print Assumptions DepMap.constant.
+\ No newline at end of file