diff --git a/app_class.py b/app_class.py
index b1cb5c7..2968b0f 100644
--- a/app_class.py
+++ b/app_class.py
@@ -3,8 +3,8 @@ from config import Config
 
 
 class AppClass:
-    def __init__(self, _config: Config, testmode: bool = False) -> None:
-        self.testmode = testmode
+    def __init__(self, _config: Config) -> None:
         self._config = _config
         self.log = getLogger(self.__class__.__name__, loglevel=_config.loglevel.upper())
-        self.log.info(f'initializing {self.__class__.__name__}')
\ No newline at end of file
+        self.log.info(f'initializing {self.__class__.__name__}')
+    
\ No newline at end of file
diff --git a/cpu_governor_auto_adjust.py b/cpu_governor_auto_adjust.py
index 51c0136..743a268 100755
--- a/cpu_governor_auto_adjust.py
+++ b/cpu_governor_auto_adjust.py
@@ -1,8 +1,9 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 from pathlib import Path
 from logger import getLogger
 from mapping import trigger_mapping
 from config import Config
+from governor import Governor
 
 
 def main() -> None:
@@ -16,6 +17,8 @@ def main() -> None:
         triggers.append(
             trigger_mapping[triggertuple.name](triggertuple.name, config)
         )
+    gov = Governor(config)
+    gov.cpufreq
 
 if __name__ == "__main__":
     main()
diff --git a/governor.py b/governor.py
index 3b532fe..9f32036 100644
--- a/governor.py
+++ b/governor.py
@@ -5,18 +5,22 @@ from functools import cached_property
 
 
 class Governor(AppClass):
-    def __init__(self, _config: Config, testmode: bool = False) -> None:
-        super().__init__(_config, testmode)
+    def __init__(self, _config: Config) -> None:
+        super().__init__(_config)
 
     @cached_property
     def cpufreq(self) -> cpuFreq:
-        if self.testmode:
-            self.log.info("setting up governor in testmode")
         return cpuFreq()
     
     def set_governor(self, governor_name: str) -> None:
         self.log.debug("setting governor to %s by using command self.cpufreq.set_governors(%s)", governor_name)
-        if self.testmode:
+        
+        if self._config.testmode:
             self.log.warning("application is running in testmode, governor not set")
             return None
+        
+        if governor_name not in self.cpufreq.available_governors:
+            self.log.error("governor %s not supported by cpu", governor_name)
+            return None
+        
         self.cpufreq.set_governors(governor_name)
diff --git a/requirements.txt b/requirements.txt
index 8b13789..d3f7f33 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,2 @@
-
+cpufreq==0.3.5
+lxml==5.3.0
diff --git a/trigger.py b/trigger.py
index cdd23a6..b2c78dd 100644
--- a/trigger.py
+++ b/trigger.py
@@ -2,8 +2,8 @@ from app_class import AppClass
 from config import Config, TriggerTuple, MissingConfig
 
 class Trigger(AppClass):
-    def __init__(self, name: str, _config: Config, testmode: bool = False) -> None:
-        super().__init__(_config, testmode)
+    def __init__(self, name: str, _config: Config) -> None:
+        super().__init__(_config)
         self.name = name
         
     @property
diff --git a/triggers/roon.py b/triggers/roon.py
index a7b2fae..fb3c948 100644
--- a/triggers/roon.py
+++ b/triggers/roon.py
@@ -2,6 +2,6 @@ from trigger import Trigger
 from config import Config
 
 class RoonTrigger(Trigger):
-    def __init__(self, name: str, _config: Config, testmode: bool = False) -> None:
-        super().__init__(name, _config, testmode)
+    def __init__(self, name: str, _config: Config) -> None:
+        super().__init__(name, _config)
         
\ No newline at end of file