diff --git a/tests/pos/i6227.scala b/tests/pos/i6227.scala
new file mode 100644
index 000000000000..2076ef747af8
--- /dev/null
+++ b/tests/pos/i6227.scala
@@ -0,0 +1,3 @@
+class C {
+  opaque type T = Int
+}
\ No newline at end of file