diff --git a/src/schrittmotor.py b/src/schrittmotor.py
index 86df193..7b80430 100644
--- a/src/schrittmotor.py
+++ b/src/schrittmotor.py
@@ -7,7 +7,7 @@ import math
 GPIO.setmode(GPIO.BCM)
 #GPIO.setwarnings(False)
  
-class motor:
+class motor(GPIO):
 
     pos = 0
     freq = freq