diff --git a/Makefile.nx b/Makefile.nx
index 5ba762c..c765b15 100644
--- a/Makefile.nx
+++ b/Makefile.nx
@@ -39,7 +39,7 @@ EXEFS_SRC	:=	exefs_src
 #---------------------------------------------------------------------------------
 # options for code generation
 #---------------------------------------------------------------------------------
-ARCH	:=	-march=armv8-a -mtp=soft -fPIE
+ARCH	:=	-march=armv8-a -mtune=cortex-a57 -mtp=soft -fPIE
 
 CFLAGS	:=	-g -Wall -O2 \
 			-ffast-math \