diff --git a/main/src/main/scala/sbt/internal/CommandExchange.scala b/main/src/main/scala/sbt/internal/CommandExchange.scala
index acbe78bb6..99f1e1418 100644
--- a/main/src/main/scala/sbt/internal/CommandExchange.scala
+++ b/main/src/main/scala/sbt/internal/CommandExchange.scala
@@ -156,7 +156,8 @@ private[sbt] final class CommandExchange {
             // rememeber to shutdown only when the server comes up
             server = Some(x)
           case Some(Failure(e: AlreadyRunningException)) =>
-            s.log.warn("sbt server could not start because there's another instance of sbt running on this build.")
+            s.log.warn(
+              "sbt server could not start because there's another instance of sbt running on this build.")
             s.log.warn("Running multiple instances is unsupported")
             server = None
             firstInstance.set(false)