diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..571996b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+project/project
+project/target
+target
diff --git a/build.sbt b/build.sbt
index 6332782..2d226f6 100644
--- a/build.sbt
+++ b/build.sbt
@@ -4,8 +4,6 @@
 
 scalaVersion := "2.12.4"
 
-// scalacOptions += "-target:jvm-1.6"
-
 libraryDependencies ++= Seq(
   "org.apache.jena" % "jena-arq" % "3.6.0",
   "com.github.scopt" %% "scopt" % "3.7.0"
diff --git a/src/main/scala/uk/floop/org/RdfDiff.scala b/src/main/scala/uk/floop/org/RdfDiff.scala
index 19aaa44..5071031 100644
--- a/src/main/scala/uk/floop/org/RdfDiff.scala
+++ b/src/main/scala/uk/floop/org/RdfDiff.scala
@@ -17,13 +17,6 @@
   }
   parser.parse(args, Config()) match {
     case Some(Config(Seq(uriA, uriB))) =>
-      /*  if (args.length < 2) {
-    println("""Usage: rdfdiff [fileA/URL_A] [fileB/URL_B]
-  Parses each file/URL as RDF and shows the differences between the resulting
-  set of statements.
-""")
-    System.exit(2)
-  } */
       val a = RDFDataMgr.loadModel(uriA.toString)
       val b = RDFDataMgr.loadModel(uriB.toString)
       if (a isIsomorphicWith b) {