diff --git a/Makefile b/Makefile
index b0fe3e3..b7f0ce3 100644
--- a/Makefile
+++ b/Makefile
@@ -55,7 +55,7 @@ startup_stm32f103xe.s
 #######################################
 # binaries
 #######################################
-PREFIX = /usr/local/gcc-arm-none-eabi-5_4-2016q3/bin/arm-none-eabi-
+PREFIX = arm-none-eabi-
 CC = $(PREFIX)gcc
 AS = $(PREFIX)gcc -x assembler-with-cpp
 CP = $(PREFIX)objcopy