diff --git a/src/Makefile b/src/Makefile
index 13c2ab5..14e7591 100755
--- a/src/Makefile
+++ b/src/Makefile
@@ -11,7 +11,7 @@ VM_COMP_OBJ     = $(VM_OBJ) _compiler.o
 UNIX_OBJ        = u-main.o
 PROGRAM		= vx-scheme
 DEFVER          = -DVERSION=$(VERSION)
-CFLAGS		= -m64 -ansi -g -O2 -fno-exceptions -fno-rtti -Wall $(DEFVER)
+CFLAGS		= -ansi -g -O2 -fno-exceptions -fno-rtti -Wall $(DEFVER)
 CC		= gcc	
 TC              = ../testcases