diff --git a/docs/system/devices/cxl.rst b/docs/system/devices/cxl.rst
index 9618becdab..dd1a62bd57 100644
--- a/docs/system/devices/cxl.rst
+++ b/docs/system/devices/cxl.rst
@@ -354,13 +354,13 @@ An example of 4 devices below a switch suitable for 1, 2 or 4 way interleave::
   -device cxl-rp,port=1,bus=cxl.1,id=root_port1,chassis=0,slot=1 \
   -device cxl-upstream,bus=root_port0,id=us0 \
   -device cxl-downstream,port=0,bus=us0,id=swport0,chassis=0,slot=4 \
-  -device cxl-type3,bus=swport0,memdev=cxl-mem0,lsa=cxl-lsa0,id=cxl-pmem0,size=256M \
+  -device cxl-type3,bus=swport0,memdev=cxl-mem0,lsa=cxl-lsa0,id=cxl-pmem0 \
   -device cxl-downstream,port=1,bus=us0,id=swport1,chassis=0,slot=5 \
-  -device cxl-type3,bus=swport1,memdev=cxl-mem1,lsa=cxl-lsa1,id=cxl-pmem1,size=256M \
+  -device cxl-type3,bus=swport1,memdev=cxl-mem1,lsa=cxl-lsa1,id=cxl-pmem1 \
   -device cxl-downstream,port=2,bus=us0,id=swport2,chassis=0,slot=6 \
-  -device cxl-type3,bus=swport2,memdev=cxl-mem2,lsa=cxl-lsa2,id=cxl-pmem2,size=256M \
+  -device cxl-type3,bus=swport2,memdev=cxl-mem2,lsa=cxl-lsa2,id=cxl-pmem2 \
   -device cxl-downstream,port=3,bus=us0,id=swport3,chassis=0,slot=7 \
-  -device cxl-type3,bus=swport3,memdev=cxl-mem3,lsa=cxl-lsa3,id=cxl-pmem3,size=256M \
+  -device cxl-type3,bus=swport3,memdev=cxl-mem3,lsa=cxl-lsa3,id=cxl-pmem3 \
   -M cxl-fmw.0.targets.0=cxl.1,cxl-fmw.0.size=4G,cxl-fmw.0.interleave-granularity=4k
 
 Kernel Configuration Options