diff --git a/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java b/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java
index 42f4f094..7debd5e3 100644
--- a/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java
+++ b/src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java
@@ -668,6 +668,7 @@ public class JavaTXCompiler {
 	public boolean loadJavaTXClass(JavaClassName name) {
 		var file = findFileForClass(name);
 		if (file != null) {
+			if (classRegistry.contains(name)) return true;
 			try {
 				var tree = JavaTXParser.parse(file);
 				classRegistry.addName(name.toString(), 0); // TODO This gets overwritten later, is it bad if we don't know this right away?
diff --git a/src/main/java/de/dhbwstuttgart/parser/scope/JavaClassRegistry.java b/src/main/java/de/dhbwstuttgart/parser/scope/JavaClassRegistry.java
index 1ab04244..968daf8e 100644
--- a/src/main/java/de/dhbwstuttgart/parser/scope/JavaClassRegistry.java
+++ b/src/main/java/de/dhbwstuttgart/parser/scope/JavaClassRegistry.java
@@ -55,6 +55,10 @@ public class JavaClassRegistry {
         return existingClasses.containsKey(new JavaClassName(whole));
     }
 
+    public boolean contains(JavaClassName name) {
+        return existingClasses.containsKey(name);
+    }
+
     public int getNumberOfGenerics(String name) {
         return existingClasses.get(new JavaClassName(name));
     }
diff --git a/src/test/java/TestPackages.java b/src/test/java/TestPackages.java
index 68674bcb..d4d7128f 100644
--- a/src/test/java/TestPackages.java
+++ b/src/test/java/TestPackages.java
@@ -22,7 +22,6 @@ public class TestPackages {
         cmp.generateBytecode(bytecodeDirectory);
     }
 
-    @Ignore("FIXME")
     @Test
     public void testPackagesCircular() throws Exception {
         var cmp = new JavaTXCompiler(