diff --git a/core/ui/ViewToolbar/fold.tid b/core/ui/ViewToolbar/fold.tid
index 902344224..e35e58663 100644
--- a/core/ui/ViewToolbar/fold.tid
+++ b/core/ui/ViewToolbar/fold.tid
@@ -4,7 +4,7 @@ caption: {{$:/core/images/fold-button}} {{$:/language/Buttons/Fold/Caption}}
 description: {{$:/language/Buttons/Fold/Hint}}
 
 \whitespace trim
-<$reveal type="nomatch" state=<<folded-state>> text="hide" default="show">
+<$reveal type="nomatch" stateTitle=<<folded-state>> text="hide" default="show">
 <$button tooltip={{$:/language/Buttons/Fold/Hint}} aria-label={{$:/language/Buttons/Fold/Caption}} class=<<tv-config-toolbar-class>>>
 <$action-sendmessage $message="tm-fold-tiddler" $param=<<currentTiddler>> foldedState=<<folded-state>>/>
 <$list filter="[<tv-config-toolbar-icons>prefix[yes]]" variable="listItem">
@@ -18,7 +18,7 @@ description: {{$:/language/Buttons/Fold/Hint}}
 </$list>
 </$button>
 </$reveal>
-<$reveal type="match" state=<<folded-state>> text="hide" default="show">
+<$reveal type="match" stateTitle=<<folded-state>> text="hide" default="show">
 <$button tooltip={{$:/language/Buttons/Unfold/Hint}} aria-label={{$:/language/Buttons/Unfold/Caption}} class=<<tv-config-toolbar-class>>>
 <$action-sendmessage $message="tm-fold-tiddler" $param=<<currentTiddler>> foldedState=<<folded-state>>/>
 <$list filter="[<tv-config-toolbar-icons>prefix[yes]]" variable="listItem">
@@ -31,4 +31,4 @@ description: {{$:/language/Buttons/Fold/Hint}}
 </span>
 </$list>
 </$button>
-</$reveal>
\ No newline at end of file
+</$reveal>