1 files changed, 1 insertions, 1 deletions
diff --git a/cfrontend/Csem.v b/cfrontend/Csem.v
index 62e9dc70..f352df70 100644
--- a/cfrontend/Csem.v
+++ b/cfrontend/Csem.v
@@ -96,7 +96,7 @@ Function sem_notint (v: val) : option val :=
   end.
 
 Function sem_notbool (v: val) (ty: type) : option val :=
-  match ty with
+  match typeconv ty with
   | Tint _ _ =>
       match v with
       | Vint n => Some (Val.of_bool (Int.eq n Int.zero))