diff --git a/src/undo.c b/src/undo.c
index c11b048..4bbc0af 100644
--- a/src/undo.c
+++ b/src/undo.c
@@ -331,7 +331,7 @@
 
     // Don't allow changes in the buffer while editing the cmdline.  The
     // caller of getcmdline() may get confused.
-    if (textlock != 0)
+    if (textwinlock != 0 || textlock != 0)
     {
 	emsg(_(e_textlock));
 	return FALSE;