diff --git a/py65/assembler.py b/py65/assembler.py
index 958c70d..9dfbf1d 100644
--- a/py65/assembler.py
+++ b/py65/assembler.py
@@ -1,5 +1,4 @@
 import re
-from py65.devices.mpu6502 import MPU
 from py65.utils.addressing import AddressParser