diff --git a/src/avr_usart.h b/src/avr_usart.h
index 5cc14a3..66d21f6 100644
--- a/src/avr_usart.h
+++ b/src/avr_usart.h
@@ -21,7 +21,7 @@
 
 //F_CPU and BAUD should be defined with -D when compiling the code.
 #ifndef F_CPU
-    #define F_CPU   1000000UL
+    #define F_CPU   14745600UL
 #endif
 
 #ifndef BUAD