diff --git a/Makefile b/Makefile
index c241455..ce9fde9 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ OBJ            = main.o
 OPTIMIZE       = -Os -std=gnu99
 PROGRAMMER     = usbtiny
 
-MCU_TARGET     = attiny13a
+MCU_TARGET     = attiny13
 DEFS           = -DF_CPU=1000000UL
 
 INCLUDES       = -I.