diff --git a/bin/9l b/bin/9l
index 7ea689d1..c10c11e8 100755
--- a/bin/9l
+++ b/bin/9l
@@ -147,6 +147,11 @@ then
 		then
 			X11=/usr/X11R6
 		fi
+		# x86_64 seems to put its 64-bit libraries in lib64.
+		if [ "${OBJTYPE:-`uname -m`}" = "x86_64" ]
+		then
+			libsl="$libsl -L$X11/lib64"
+		fi
 		libsl="$libsl -L$X11/lib -lX11"
 	fi
 fi