diff --git a/se-commons-gradle/src/main/java/de/monticore/gradle/queue/CachedQueueService.java b/se-commons-gradle/src/main/java/de/monticore/gradle/queue/CachedQueueService.java
index 0e247dd..e86e2df 100644
--- a/se-commons-gradle/src/main/java/de/monticore/gradle/queue/CachedQueueService.java
+++ b/se-commons-gradle/src/main/java/de/monticore/gradle/queue/CachedQueueService.java
@@ -496,6 +496,9 @@ protected void executeInClassloader(Runnable runnable, @Nullable String prefix,
     // but groovy uses AccessController.doPrivileged itself, causing
     // the UpdateCheckerRunnable to be assigned its current domains
     // We thus skip them, as otherwise the context loader leaks
+    if (currentDomains == null) {
+      return null;
+    }
     final List<ProtectionDomain> combinedWithoutIsolated = new ArrayList<>();
     for (ProtectionDomain protectionDomain : currentDomains) {
       if (protectionDomain.getClassLoader() == null || !isClassLoaderOrChild(