diff --git a/base/src/main/java/de/staropensource/sosengine/base/Engine.java b/base/src/main/java/de/staropensource/sosengine/base/Engine.java
index 2d8b944e..13b29139 100644
--- a/base/src/main/java/de/staropensource/sosengine/base/Engine.java
+++ b/base/src/main/java/de/staropensource/sosengine/base/Engine.java
@@ -72,6 +72,14 @@ public final class Engine implements SubsystemMainClass {
     @NotNull
     private LoggerInstance logger;
 
+    /**
+     * Indicates if the engine is shutting down.
+     *
+     * @since 1-alpha1
+     */
+    @Getter
+    private boolean shuttingDown = false;
+
     /**
      * Constructor, initializes the StarOpenSource Engine.
      *
@@ -199,6 +207,7 @@ public final class Engine implements SubsystemMainClass {
      */
     public void shutdown(@Range(from = 0, to = 255) int exitCode) {
         logger.info("Shutting engine down");
+        shuttingDown = true;
         logger.verb("Notifiying classes about shutdown");
         new EngineShutdownEvent().callEvent();
         logger.verb("Notifying subsystems about shutdown");