diff --git a/avr/devices/c01/boot/boot.asm b/avr/devices/c01/boot/boot.asm
index c681ea6..5b123b0 100644
--- a/avr/devices/c01/boot/boot.asm
+++ b/avr/devices/c01/boot/boot.asm
@@ -17,8 +17,6 @@
 
 .include "common/utils_wait.asm"
 .include "common/utils_io.asm"
-.include "modules/com2/defs.asm"
-.include "modules/comproto/defs.asm"
 
 
 
@@ -140,22 +138,7 @@ main:
 
 
 systemSetSpeed:
-#if 0  ; disabled (can't really change clock at runtime)
-.if clock == 8000000
-  ldi r16, (1<<CLKPCE)
-  ldi r17, 0
-  out CLKPR, r16
-  out CLKPR, r17
-.endif
-
-.if clock == 1000000
-  ldi r16, (1<<CLKPCE)
-  ldi r17, (1<<CLKPS1) | (1<<CLKPS0)
-  out CLKPR, r16
-  out CLKPR, r17
-.endif
-#endif
-
+  ; speed not changeable at runtime on this device
   ret