diff --git a/main-command/src/main/scala/sbt/State.scala b/main-command/src/main/scala/sbt/State.scala
index f8a88a7c6..62a0920a1 100644
--- a/main-command/src/main/scala/sbt/State.scala
+++ b/main-command/src/main/scala/sbt/State.scala
@@ -365,6 +365,7 @@ object State {
                     case _ =>
                   }
               }
+            case _ =>
           }
       }
       s.put(BasicKeys.extendedClassLoaderCache, cache)