diff --git a/tests/tbs/tb0396.pp b/tests/tbs/tb0396.pp
new file mode 100644
index 0000000000..a9151b286f
--- /dev/null
+++ b/tests/tbs/tb0396.pp
@@ -0,0 +1,9 @@
+{ %VERSION=1.1 }
+type
+   to2 = interface
+     function bufwrite(eat : boolean = true) : integer;stdcall;
+   end;
+
+begin
+end.
+