diff --git a/config/Makefile.linux b/config/Makefile.linux
index 69846ab..1947827 100644
--- a/config/Makefile.linux
+++ b/config/Makefile.linux
@@ -6,7 +6,12 @@ CFLAGS.EXTRA = -DGLEW_MX
 endif
 PICFLAG = -fPIC
 LDFLAGS.SO = -shared -Wl,-soname=$(LIB.SONAME)
+M_ARCH ?= $(shell arch)
+ifeq (${M_ARCH},x86_64))
+LDFLAGS.EXTRA = -L/usr/X11R6/lib64
+else
 LDFLAGS.EXTRA = -L/usr/X11R6/lib
+endif
 LDFLAGS.GL = -lXmu -lXi -lGLU -lGL -lXext -lX11
 LDFLAGS.STATIC = -Wl,-Bstatic
 LDFLAGS.DYNAMIC = -Wl,-Bdynamic