diff --git a/src/cmd/ed2.s b/src/cmd/ed2.s
index 238d08b..ae6ef36 100644
--- a/src/cmd/ed2.s
+++ b/src/cmd/ed2.s
@@ -515,5 +515,5 @@ line: .=.+64
 nlist: .=.+50
 clist: .=.+50
 compbuf: .=.+100
-dskbuf: .=.+1 "[line crossed out - scan markup]
+dskbuf: .=.+1024 "[line crossed out - scan markup]
 lnodes: .=.+1000