diff --git a/src/main/java/org/dice_research/enexa/transform/EnexaTransformator.java b/src/main/java/org/dice_research/enexa/transform/EnexaTransformator.java
index ec97a8e..aa66cb1 100644
--- a/src/main/java/org/dice_research/enexa/transform/EnexaTransformator.java
+++ b/src/main/java/org/dice_research/enexa/transform/EnexaTransformator.java
@@ -32,7 +32,6 @@
 import org.dice_research.enexa.vocab.IANAMediaType;
 import org.dice_research.rdf.RdfHelper;
 import org.dice_research.sparql.SparqlQueryUtils;
-import org.semanticweb.owlapi.formats.OWLXMLDocumentFormat;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -134,6 +133,8 @@ public static void main(String[] args) {
      * @param targetMediaResource
      * @return
      */
+    @SuppressWarnings("unused")
+    @Deprecated
     private static Lang getOutputLang(Resource targetMediaResource) {
         Lang outputLang = IANAMediaType.resource2Lang(targetMediaResource);
         // If this is one of the languages we can handle...
diff --git a/src/main/java/org/dice_research/enexa/transform/StreamingTransformator.java b/src/main/java/org/dice_research/enexa/transform/StreamingTransformator.java
index 6706131..1ae6a43 100644
--- a/src/main/java/org/dice_research/enexa/transform/StreamingTransformator.java
+++ b/src/main/java/org/dice_research/enexa/transform/StreamingTransformator.java
@@ -1,22 +1,16 @@
 package org.dice_research.enexa.transform;
 
 import java.io.BufferedInputStream;
-import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-import java.util.Random;
 
 import javax.annotation.CheckForNull;
 
 import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
-import org.apache.commons.compress.compressors.bzip2.BZip2CompressorOutputStream;
 import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
-import org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream;
-import org.apache.commons.io.IOUtils;
 import org.apache.jena.atlas.web.ContentType;
 import org.apache.jena.atlas.web.TypedInputStream;
 import org.apache.jena.riot.Lang;
@@ -24,7 +18,6 @@
 import org.apache.jena.riot.RDFParser;
 import org.apache.jena.riot.WebContent;
 import org.apache.jena.riot.system.StreamRDF;
-import org.apache.jena.riot.system.StreamRDFWriter;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
diff --git a/src/test/java/org/dice_research/enexa/transform/AbstractTransformatorTest.java b/src/test/java/org/dice_research/enexa/transform/AbstractTransformatorTest.java
index f0f08e1..270f282 100644
--- a/src/test/java/org/dice_research/enexa/transform/AbstractTransformatorTest.java
+++ b/src/test/java/org/dice_research/enexa/transform/AbstractTransformatorTest.java
@@ -47,7 +47,7 @@ public AbstractTransformatorTest(Model expectedModel, String outputFormatIri, Mo
         this.inputFormatIris = inputFormatIris;
         this.inputLangs = new Lang[inputFormatIris.length];
         // Print information about this test
-        System.out.println("Test output format: " + IANAMediaType.iri2ContentType(outputFormatIri.toString()));
+        System.out.println("Test output format: " + IANAMediaType.iri2ContentType(outputFormatIri));
         System.out.print("     input formats: ");
         for (int i = 0; i < inputFormatIris.length; ++i) {
             inputLangs[i] = IANAMediaType.iri2Lang(inputFormatIris[i]);
@@ -59,35 +59,35 @@ public AbstractTransformatorTest(Model expectedModel, String outputFormatIri, Mo
         }
     }
 
-//    @Test
-//    public void testCompInFileExt() {
-//        try {
-//            createFilesAndTest(true, true);
-//        } catch (Exception e) {
-//            e.printStackTrace();
-//            Assert.fail();
-//        }
-//    }
-//
-//    @Test
-//    public void testFileExt() {
-//        try {
-//            createFilesAndTest(true, false);
-//        } catch (Exception e) {
-//            e.printStackTrace();
-//            Assert.fail();
-//        }
-//    }
-//
-//    @Test
-//    public void testCompIn() {
-//        try {
-//            createFilesAndTest(false, true);
-//        } catch (Exception e) {
-//            e.printStackTrace();
-//            Assert.fail();
-//        }
-//    }
+    @Test
+    public void testCompInFileExt() {
+        try {
+            createFilesAndTest(true, true);
+        } catch (Exception e) {
+            e.printStackTrace();
+            Assert.fail();
+        }
+    }
+
+    @Test
+    public void testFileExt() {
+        try {
+            createFilesAndTest(true, false);
+        } catch (Exception e) {
+            e.printStackTrace();
+            Assert.fail();
+        }
+    }
+
+    @Test
+    public void testCompIn() {
+        try {
+            createFilesAndTest(false, true);
+        } catch (Exception e) {
+            e.printStackTrace();
+            Assert.fail();
+        }
+    }
 
     @Test
     public void test() {
diff --git a/src/test/java/org/dice_research/enexa/transform/RDF2OntologyTransformatorTest.java b/src/test/java/org/dice_research/enexa/transform/RDF2OntologyTransformatorTest.java
index 67c1ce9..d83663d 100644
--- a/src/test/java/org/dice_research/enexa/transform/RDF2OntologyTransformatorTest.java
+++ b/src/test/java/org/dice_research/enexa/transform/RDF2OntologyTransformatorTest.java
@@ -25,7 +25,6 @@
 import org.junit.runners.Parameterized;
 import org.junit.runners.Parameterized.Parameters;
 import org.semanticweb.owlapi.apibinding.OWLManager;
-import org.semanticweb.owlapi.model.IRI;
 import org.semanticweb.owlapi.model.OWLAxiom;
 import org.semanticweb.owlapi.model.OWLOntology;
 import org.semanticweb.owlapi.model.OWLOntologyCreationException;
@@ -51,7 +50,6 @@ public RDF2OntologyTransformatorTest(Model expectedModel, String outputFormatIri
 
     @Override
     protected void compareModels(InputStream is, String outputFormatIri, Model expectedModel) {
-//        String contentType = IANAMediaType.iri2ContentType(outputFormatIri);
         try {
             File expectedFile = File.createTempFile("test-expected-result-", ".nt");
             try (Writer writer = new FileWriter(expectedFile, StandardCharsets.UTF_8)) {
@@ -71,12 +69,10 @@ protected void compareModels(InputStream is, String outputFormatIri, Model expec
             OWLOntology readOnt = manager.loadOntologyFromOntologyDocument(is);
 
             for (OWLAxiom a : expectedOntology.getAxioms()) {
-                System.out.println(a);
                 Assert.assertTrue("Read ontology does not contain the expected axiom " + a.toString(),
                         readOnt.containsAxiom(a));
             }
             for (OWLAxiom a : readOnt.getAxioms()) {
-                System.out.println(a);
                 Assert.assertTrue("Read ontology contains the additional axiom " + a.toString(),
                         expectedOntology.containsAxiom(a));
             }