diff --git a/i3-migrate-config-to-v4 b/i3-migrate-config-to-v4
index c8ff41c9..ae5bf4de 100755
--- a/i3-migrate-config-to-v4
+++ b/i3-migrate-config-to-v4
@@ -202,7 +202,7 @@ sub convert_command {
     # simple replacements
     my @replace = (
         qr/^s/ => 'layout stacking',
-        qr/^d/ => 'layout default',
+        qr/^d/ => 'layout toggle split',
         qr/^T/ => 'layout tabbed',
         qr/^f($|[^go])/ => 'fullscreen',
         qr/^fg/ => 'fullscreen global',
diff --git a/testcases/t/171-config-migrate.t b/testcases/t/171-config-migrate.t
index e791bb01..dd0cbc60 100644
--- a/testcases/t/171-config-migrate.t
+++ b/testcases/t/171-config-migrate.t
@@ -195,7 +195,7 @@ EOT
 
 $output = migrate_config($input);
 ok(line_exists($output, qr|^bindsym Mod1\+s layout stacking$|), 's replaced');
-ok(line_exists($output, qr|^bindsym Mod1\+s layout default$|), 'd replaced');
+ok(line_exists($output, qr|^bindsym Mod1\+s layout toggle split$|), 'd replaced');
 ok(line_exists($output, qr|^bindsym Mod1\+s layout tabbed$|), 'T replaced');
 ok(line_exists($output, qr|^bindsym Mod1\+s fullscreen$|), 'f replaced');
 ok(line_exists($output, qr|^bindsym Mod1\+s fullscreen global$|), 'fg replaced');