diff --git a/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java b/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java
index 2b5c76fb..e1cd3063 100644
--- a/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java
+++ b/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java
@@ -48,7 +48,7 @@ import java.util.stream.Collectors;
 
 public class JavaTXCompiler {
 
-	public static JavaTXCompiler INSTANCE;
+	//public static JavaTXCompiler INSTANCE;
     final CompilationEnvironment environment;
     Boolean resultmodel = true;
     public final Map<File, SourceFile> sourceFiles = new HashMap<>();
@@ -57,13 +57,13 @@ public class JavaTXCompiler {
     
     public JavaTXCompiler(File sourceFile) throws IOException, ClassNotFoundException {
         this(Arrays.asList(sourceFile));
-        INSTANCE = this;
+        //INSTANCE = this;
     }
 
     public JavaTXCompiler(File sourceFile, Boolean log) throws IOException, ClassNotFoundException {
     	this(sourceFile);
     	this.log = log;
-    	INSTANCE = this;
+    	//INSTANCE = this;
     }
     
     public JavaTXCompiler(List<File> sources) throws IOException, ClassNotFoundException {
@@ -71,7 +71,7 @@ public class JavaTXCompiler {
         for (File s : sources) {
             sourceFiles.put(s, parse(s));
         }
-        INSTANCE = this;
+        //INSTANCE = this;
     }
 
     public ConstraintSet<Pair> getConstraints() throws ClassNotFoundException {