1 files changed, 6 insertions, 4 deletions
diff --git a/test/files/run/t3857.scala b/test/files/run/t3857.scala
index b33685d4f2..94f52f72fe 100644
--- a/test/files/run/t3857.scala
+++ b/test/files/run/t3857.scala
@@ -4,8 +4,10 @@ class ScalaGeneric { var s: java.util.Set[String] = _ }
 trait ScalaGeneric2Trait { var s: java.util.Set[String] = _ }
 class ScalaGeneric2 extends ScalaGeneric2Trait { }
 
-object Test extends App with SigTest {
-  show[ScalaGeneric]()
-  show[ScalaGeneric2Trait]()
-  show[ScalaGeneric2]()
+object Test extends SigTest {
+  def main(args: Array[String]): Unit = {
+    show[ScalaGeneric]()
+    show[ScalaGeneric2Trait]()
+    show[ScalaGeneric2]()
+  }
 }