diff --git a/build.sbt b/build.sbt
index ec6ecc6b2..36424cdd3 100644
--- a/build.sbt
+++ b/build.sbt
@@ -192,7 +192,7 @@ executableKey := {
 
   // zip it up
   IO delete (temp / "META-INF" / "MANIFEST.MF")
-  val contentMappings = (temp.allPaths --- PathFinder(temp)).get pair { file =>
+  val contentMappings = (temp.allPaths --- PathFinder(temp)).get() pair { file =>
     IO.relativizeFile(temp, file)
   }
   val manifest = new JarManifest