diff --git a/tests/neg/i16601.check b/tests/neg/i16601.check
index 25baef04e479..c2059506cb09 100644
--- a/tests/neg/i16601.check
+++ b/tests/neg/i16601.check
@@ -1,6 +1,6 @@
--- [E042] Type Error: tests/neg/i16601.scala:1:27 ----------------------------------------------------------------------
-1 |@main def Test: Unit = new concurrent.ExecutionContext  // error
-  |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-  |                           ExecutionContext is a trait; it cannot be instantiated
+-- [E042] Type Error: tests/neg/i16601.scala:1:26 ----------------------------------------------------------------------
+1 |@main def Test: Any = new concurrent.ExecutionContext  // error
+  |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  |                          ExecutionContext is a trait; it cannot be instantiated
   |
   | longer explanation available when compiling with `-explain`
diff --git a/tests/neg/i16601.scala b/tests/neg/i16601.scala
index 2e058db0093c..00d0c7c9b15e 100644
--- a/tests/neg/i16601.scala
+++ b/tests/neg/i16601.scala
@@ -1 +1 @@
-@main def Test: Unit = new concurrent.ExecutionContext  // error
\ No newline at end of file
+@main def Test: Any = new concurrent.ExecutionContext  // error
\ No newline at end of file
diff --git a/tests/neg/i16601a.check b/tests/neg/i16601a.check
index f6ddd66ca107..6640f5b41749 100644
--- a/tests/neg/i16601a.check
+++ b/tests/neg/i16601a.check
@@ -1,7 +1,7 @@
--- [E042] Type Error: tests/neg/i16601a.scala:3:27 ---------------------------------------------------------------------
-3 |@main def Test: Unit = new concurrent.ExecutionContext  // error
-  |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-  |                           ExecutionContext is a trait; it cannot be instantiated
+-- [E042] Type Error: tests/neg/i16601a.scala:3:26 ---------------------------------------------------------------------
+3 |@main def Test: Any = new concurrent.ExecutionContext  // error
+  |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+  |                          ExecutionContext is a trait; it cannot be instantiated
   |---------------------------------------------------------------------------------------------------------------------
   | Explanation (enabled by `-explain`)
   |- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
diff --git a/tests/neg/i16601a.scala b/tests/neg/i16601a.scala
index 232f9c1c9d03..b85828122e8a 100644
--- a/tests/neg/i16601a.scala
+++ b/tests/neg/i16601a.scala
@@ -1,3 +1,3 @@
 //> using options -explain
 
-@main def Test: Unit = new concurrent.ExecutionContext  // error
\ No newline at end of file
+@main def Test: Any = new concurrent.ExecutionContext  // error
\ No newline at end of file