diff --git a/makefile b/makefile
index 83b61e1..8eb45ea 100644
--- a/makefile
+++ b/makefile
@@ -7,10 +7,10 @@
 # Compiler
 CC = avr-gcc
 
-#Default cpu frequency is 9.8Mhz, 4.8 gives us less power consumption
+#Default cpu frequency is 9.6Mhz, 4.8 gives us less power consumption
 #F_CPU = 1000000UL
 #F_CPU = 4800000UL
-F_CPU = 9800000UL
+F_CPU = 9600000UL
 MCU = attiny13a
 
 # Flags