diff --git a/demos/KINETIS/RT-FREEDOM-K20D50M/Makefile b/demos/KINETIS/RT-FREEDOM-K20D50M/Makefile
index 9780ea7a1..d01a5e013 100644
--- a/demos/KINETIS/RT-FREEDOM-K20D50M/Makefile
+++ b/demos/KINETIS/RT-FREEDOM-K20D50M/Makefile
@@ -138,7 +138,7 @@ INCDIR = $(PORTINC) $(KERNINC) $(TESTINC) \
 # Compiler settings
 #
 
-MCU  = cortex-m0
+MCU  = cortex-m4
 
 #TRGT = arm-elf-
 TRGT = arm-none-eabi-