diff --git a/src/include/lifecycle.h b/src/include/lifecycle.h
index ba21f3791..b5b223f0b 100644
--- a/src/include/lifecycle.h
+++ b/src/include/lifecycle.h
@@ -74,9 +74,6 @@ namespace lumiera {
       
       LifecycleHook (Symbol eventLabel, Hook callbackFun);
       
-      /** for chained calls (add multiple callbacks) */
-      LifecycleHook& add (Hook callbackFun);
-      
       /** alternative, static interface for registering a callback */
       static void add (Symbol eventLabel, Hook callbackFun);
       
diff --git a/src/lib/lifecycleregistry.hpp b/src/lib/lifecycleregistry.hpp
index 774fc726b..88f8b9f63 100644
--- a/src/lib/lifecycleregistry.hpp
+++ b/src/lib/lifecycleregistry.hpp
@@ -35,8 +35,8 @@
  */
 
 
-#ifndef LUMIERA_LIFECYCLE_H
-#define LUMIERA_LIFECYCLE_H
+#ifndef LUMIERA_LIFECYCLEREGISTRY_H
+#define LUMIERA_LIFECYCLEREGISTRY_H
 
 #include <map>
 #include <set>
diff --git a/src/lumiera/appstate.cpp b/src/lumiera/appstate.cpp
index 73e8285fa..4df6b743e 100644
--- a/src/lumiera/appstate.cpp
+++ b/src/lumiera/appstate.cpp
@@ -21,6 +21,7 @@
 * *****************************************************/
 
 
+#include "include/lifecycle.h"
 #include "lumiera/appstate.hpp"
 #include "lib/lifecycleregistry.hpp"
 
@@ -88,10 +89,10 @@ namespace lumiera {
   
   LifecycleHook::LifecycleHook (Symbol eventLabel, Callback callbackFun)
   {
-    this->add (eventLabel,callbackFun);
+    add (eventLabel,callbackFun);
   }
   
-  LifecycleHook&
+  void
   LifecycleHook::add (Symbol eventLabel, Callback callbackFun)
   {
     bool isNew = AppState::instance().lifecycleHooks_->enroll (eventLabel,callbackFun);
@@ -100,7 +101,13 @@ namespace lumiera {
       callbackFun();  // when this code executes,
                      //  then per definition we are already post "basic init"
                     //   (which happens in the AppState ctor); thus fire it immediately
-    return *this;
+  }
+  
+  
+  void
+  trigger (Symbol eventLabel)
+  {
+    AppState::lifecycle (eventLabel);
   }
   
   
diff --git a/tests/40components.tests b/tests/40components.tests
index 6aeaa38e5..1736f92e9 100644
--- a/tests/40components.tests
+++ b/tests/40components.tests
@@ -172,9 +172,9 @@ out: caught lumiera::Error: LUMIERA_ERROR_EXTERNAL:failure in external service (
 out: caught std::runtime_error: test-5
 out: caught std::exception. (unspecific)
 out: intermediate handler caught: LUMIERA_ERROR_EXTERNAL:failure in external service (test-7).....will rethrow as error::State
-out: caught lumiera::Error: LUMIERA_ERROR_STATE:unforseen state -- caused by: LUMIERA_ERROR_EXTERNAL:failure in external service (test-7).
+out: caught lumiera::Error: LUMIERA_ERROR_STATE:unforeseen state -- caused by: LUMIERA_ERROR_EXTERNAL:failure in external service (test-7).
 out: intermediate handler caught: LUMIERA_ERROR_EXTERNAL:failure in external service (test-8).....will rethrow as error::State
-out: 2nd intermediate handler caught: LUMIERA_ERROR_STATE:unforseen state -- caused by: LUMIERA_ERROR_EXTERNAL:failure in external service (test-8).....will rethrow as error::Config
+out: 2nd intermediate handler caught: LUMIERA_ERROR_STATE:unforeseen state -- caused by: LUMIERA_ERROR_EXTERNAL:failure in external service (test-8).....will rethrow as error::Config
 out: caught lumiera::Error: LUMIERA_ERROR_CONFIG:misconfiguration -- caused by: LUMIERA_ERROR_EXTERNAL:failure in external service (test-8).
 END
 
diff --git a/tests/common/mainsuite.cpp b/tests/common/mainsuite.cpp
index 58024d645..562dc264c 100644
--- a/tests/common/mainsuite.cpp
+++ b/tests/common/mainsuite.cpp
@@ -24,6 +24,7 @@
 #include "common/test/suite.hpp"
 #include "common/test/testoption.hpp"
 #include "lumiera/appstate.hpp"
+#include "include/lifecycle.h"
 
 using lumiera::AppState;
 using lumiera::ON_GLOBAL_INIT;