diff --git a/tests/neg/main-functions-nameclash.scala b/tests/neg/main-functions-nameclash.scala
new file mode 100644
index 000000000000..23a530e28271
--- /dev/null
+++ b/tests/neg/main-functions-nameclash.scala
@@ -0,0 +1,3 @@
+object foo {
+  @main def foo(x: Int) = () // error: class foo and object foo produce classes that overwrite one another
+}
diff --git a/tests/warn/main-functions-nameclash.scala b/tests/warn/main-functions-nameclash.scala
deleted file mode 100644
index bc0fe64379d4..000000000000
--- a/tests/warn/main-functions-nameclash.scala
+++ /dev/null
@@ -1,5 +0,0 @@
-
-
-object foo {
-  @main def foo(x: Int) = () // warn: class foo and object foo produce classes that overwrite one another
-}