diff --git a/src/main/kotlin/com/beust/kobalt/Args.kt b/src/main/kotlin/com/beust/kobalt/Args.kt
index 1ba48060..cf328612 100644
--- a/src/main/kotlin/com/beust/kobalt/Args.kt
+++ b/src/main/kotlin/com/beust/kobalt/Args.kt
@@ -7,7 +7,7 @@ class Args {
     var targets: List<String> = arrayListOf()
 
     @Parameter(names = arrayOf("-bf", "--buildFile"), description = "The build file")
-    var buildFile: String = "Build.kt"
+    var buildFile: String? = null
 
     @Parameter(names = arrayOf("--checkVersions"), description = "Check if there are any newer versions of the " +
             "dependencies")
diff --git a/src/main/kotlin/com/beust/kobalt/Main.kt b/src/main/kotlin/com/beust/kobalt/Main.kt
index eacf21d2..6aa1e5d3 100644
--- a/src/main/kotlin/com/beust/kobalt/Main.kt
+++ b/src/main/kotlin/com/beust/kobalt/Main.kt
@@ -109,7 +109,7 @@ private class Main @Inject constructor(
             //
             Wrapper().install()
             ProjectGenerator().run(args)
-        } else if (args.usage || args.targets.isEmpty()) {
+        } else if (args.usage) {
             jc.usage()
         } else {
             if (! buildFile.exists()) {