diff --git a/extra_script.py b/extra_script.py
index 0a4d68c..ce6e89e 100644
--- a/extra_script.py
+++ b/extra_script.py
@@ -22,7 +22,6 @@ CFG_INCLUDE='GwConfigDefinitions.h'
 CFG_INCLUDE_IMPL='GwConfigDefImpl.h'
 XDR_INCLUDE='GwXdrTypeMappings.h'
 TASK_INCLUDE='GwUserTasks.h'
-TASK_INCLUDE_IF='GwUserTasksIf.h'
 EMBEDDED_INCLUDE="GwEmbeddedFiles.h"
 
 def getEmbeddedFiles(env):
@@ -267,14 +266,12 @@ def checkAndAdd(file,names,ilist):
     if not match:
         return
     ilist.append(file) 
-def genereateUserTasks(outfile,forIf=False):
+def genereateUserTasks(outfile):
     includes=[]
     for task in userTaskDirs:
         #print("##taskdir=%s"%task)
         base=os.path.basename(task)
         includeNames=[base.lower()+".h",'gw'+base.lower()+'.h']
-        if forIf:
-            includeNames=["i"+base.lower()+".h",'gwi'+base.lower()+'.h']
         for f in os.listdir(task):
             checkAndAdd(f,includeNames,includes)
     includeData=""
@@ -403,7 +400,6 @@ def prebuild(env):
             print("#WARNING: infile %s for %s not found"%(inFile,ef))
     generateEmbedded(filedefs,os.path.join(outPath(),EMBEDDED_INCLUDE))
     genereateUserTasks(os.path.join(outPath(), TASK_INCLUDE))
-    genereateUserTasks(os.path.join(outPath(), TASK_INCLUDE_IF),forIf=True)
     generateFile(os.path.join(basePath(),XDR_FILE),os.path.join(outPath(),XDR_INCLUDE),generateXdrMappings)
     version="dev"+datetime.now().strftime("%Y%m%d")
     env.Append(CPPDEFINES=[('GWDEVVERSION',version)])
diff --git a/lib/buttontask/GwButtonTask.cpp b/lib/buttontask/GwButtonTask.cpp
index 72b84cf..908c3fa 100644
--- a/lib/buttontask/GwButtonTask.cpp
+++ b/lib/buttontask/GwButtonTask.cpp
@@ -1,5 +1,4 @@
 #include "GwButtonTask.h"
-#include "GwIButtonTask.h"
 #include "GwHardware.h"
 #include "GwApi.h"
 #include "GwLedTask.h"
diff --git a/lib/buttontask/GwButtonTask.h b/lib/buttontask/GwButtonTask.h
index 853e6c6..107b831 100644
--- a/lib/buttontask/GwButtonTask.h
+++ b/lib/buttontask/GwButtonTask.h
@@ -4,4 +4,19 @@
 //task function
 void initButtons(GwApi *param);
 DECLARE_INITFUNCTION(initButtons);
+
+class IButtonTask : public GwApi::TaskInterfaces::Base
+{
+public:
+    typedef enum
+    {
+        OFF,
+        PRESSED,
+        PRESSED_5, // 5...10s
+        PRESSED_10 //>10s
+    } ButtonState;
+    ButtonState state=OFF;
+    long pressCount=0;
+};
+DECLARE_TASKIF(IButtonTask);
 #endif
\ No newline at end of file
diff --git a/lib/buttontask/GwIButtonTask.h b/lib/buttontask/GwIButtonTask.h
deleted file mode 100644
index 45a019e..0000000
--- a/lib/buttontask/GwIButtonTask.h
+++ /dev/null
@@ -1,19 +0,0 @@
-#ifndef _GWIBUTTONTASK_H
-#define _GWIBUTTONTASK_H
-#include "GwApi.h"
-class IButtonTask : public GwApi::TaskInterfaces::Base
-{
-public:
-    typedef enum
-    {
-        OFF,
-        PRESSED,
-        PRESSED_5, // 5...10s
-        PRESSED_10 //>10s
-    } ButtonState;
-    ButtonState state=OFF;
-    long pressCount=0;
-};
-DECLARE_TASKIF(IButtonTask);
-
-#endif
\ No newline at end of file
diff --git a/lib/exampletask/GwExampleTask.cpp b/lib/exampletask/GwExampleTask.cpp
index bccf2f7..340b785 100644
--- a/lib/exampletask/GwExampleTask.cpp
+++ b/lib/exampletask/GwExampleTask.cpp
@@ -2,7 +2,6 @@
 //we only compile for some boards
 #ifdef BOARD_TEST
 #include "GwExampleTask.h"
-#include "GwIExampleTask.h"
 #include "GwApi.h"
 #include "GWConfig.h"
 #include <vector>
diff --git a/lib/exampletask/GwExampleTask.h b/lib/exampletask/GwExampleTask.h
index eb4e3f3..bc65ae9 100644
--- a/lib/exampletask/GwExampleTask.h
+++ b/lib/exampletask/GwExampleTask.h
@@ -12,8 +12,20 @@ void exampleInit(GwApi *param);
 
 //let the core call an init function before the 
 //N2K Stuff and the communication is set up
-//normally you should not need this at all
+//especially this init function will register the real task at the core
+//this gives you some flexibility to decide based on config or defines whether you
+//really want to start the task or not
 //this function must return when done - otherwise the core will not start up
 DECLARE_INITFUNCTION(exampleInit);
 
+/**
+ * an interface for the example task
+*/
+class ExampleTaskIf : public GwApi::TaskInterfaces::Base{
+    public:
+    long count=0;
+    String someValue;
+};
+DECLARE_TASKIF(ExampleTaskIf);
+
 #endif
\ No newline at end of file
diff --git a/lib/exampletask/GwIExampleTask.h b/lib/exampletask/GwIExampleTask.h
deleted file mode 100644
index 85b0c81..0000000
--- a/lib/exampletask/GwIExampleTask.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#ifndef GWIEXAMPLETASK_H
-#define GWIEXAMPLETASK_H
-#include "GwApi.h"
-/**
- * an interface for the example task
-*/
-class ExampleTaskIf : public GwApi::TaskInterfaces::Base{
-    public:
-    long count=0;
-    String someValue;
-};
-DECLARE_TASKIF(ExampleTaskIf);
-
-#endif
\ No newline at end of file
diff --git a/lib/ledtask/GwLedTask.cpp b/lib/ledtask/GwLedTask.cpp
index 3877a6c..5df1e9d 100644
--- a/lib/ledtask/GwLedTask.cpp
+++ b/lib/ledtask/GwLedTask.cpp
@@ -2,7 +2,6 @@
 #include "GwHardware.h"
 #include "GwApi.h"
 #include "FastLED.h"
-#include "GwIButtonTask.h"
 typedef enum {
     LED_OFF,
     LED_GREEN,
diff --git a/lib/usercode/GwUserCode.cpp b/lib/usercode/GwUserCode.cpp
index 0473910..2841731 100644
--- a/lib/usercode/GwUserCode.cpp
+++ b/lib/usercode/GwUserCode.cpp
@@ -93,7 +93,6 @@ class GwUserCapability{
         }
 };
 #include "GwUserTasks.h"
-#include "GwUserTasksIf.h"
 
 class TaskDataEntry{
         public: