diff --git a/src/main/scala/net/ij_plugins/sf/sbt/install4j/SBTInstall4J.scala b/src/main/scala/net/ij_plugins/sf/sbt/install4j/SBTInstall4J.scala
index 377b3e1..0cb5626 100644
--- a/src/main/scala/net/ij_plugins/sf/sbt/install4j/SBTInstall4J.scala
+++ b/src/main/scala/net/ij_plugins/sf/sbt/install4j/SBTInstall4J.scala
@@ -18,8 +18,11 @@ package net.ij_plugins.sf.sbt.install4j
 
 import java.io.{File, IOException}
 
+import sbt.Keys._
 import sbt._
 
+import scala.sys.process.Process
+
 /** SBT plugin for building installers with Install4J. */
 object SBTInstall4J extends sbt.AutoPlugin {