diff --git a/main/src/main/scala/sbt/Main.scala b/main/src/main/scala/sbt/Main.scala
index 893ee2151..279da153a 100644
--- a/main/src/main/scala/sbt/Main.scala
+++ b/main/src/main/scala/sbt/Main.scala
@@ -57,10 +57,13 @@ final class xMain extends xsbti.AppMain {
 }
 final class ScriptMain extends xsbti.AppMain {
   def run(configuration: xsbti.AppConfiguration): xsbti.MainResult =
-    runManaged(initialState(configuration,
-      BuiltinCommands.ScriptCommands,
-      Script.Name :: Nil)
-    )
+    {
+      import BasicCommandStrings.runEarly
+      runManaged(initialState(configuration,
+        BuiltinCommands.ScriptCommands,
+        runEarly(Level.Error.toString) :: Script.Name :: Nil)
+      )
+    }
 }
 final class ConsoleMain extends xsbti.AppMain {
   def run(configuration: xsbti.AppConfiguration): xsbti.MainResult =
diff --git a/notes/1.0.0/silent-scalas.md b/notes/1.0.0/silent-scalas.md
new file mode 100644
index 000000000..52a9a8137
--- /dev/null
+++ b/notes/1.0.0/silent-scalas.md
@@ -0,0 +1,6 @@
+### Improvements
+
+- The startup log level is dropped to `-error` in script mode using `scalas`. [#840][840] by [@eed3si9n][@eed3si9n]
+
+  [@eed3si9n]: https://github.com/eed3si9n
+  [840]: https://github.com/sbt/sbt/issues/840