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diff --git a/test-suite/bugs/closed/3210.v b/test-suite/bugs/closed/3210.v
new file mode 100644
index 00000000..bb673f38
--- /dev/null
+++ b/test-suite/bugs/closed/3210.v
@@ -0,0 +1,22 @@
+(* Test support of let-in in arity of inductive types *)
+
+Inductive Foo : let X := Set in X :=
+| I : Foo.
+
+Definition foo (x : Foo) : bool :=
+  match x with
+  I => true
+  end.
+
+Definition foo' (x : Foo) : x = x.
+case x.
+match goal with |- I = I => idtac end. (* check form of the goal *)
+Undo 2.
+elim x.
+match goal with |- I = I => idtac end. (* check form of the goal *)
+Undo 2.
+induction x.
+match goal with |- I = I => idtac end. (* check form of the goal *)
+Undo 2.
+destruct x.
+match goal with |- I = I => idtac end. (* check form of the goal *)