diff --git a/editions/tw5.com/tiddlers/demonstrations/SampleTabThree.tid b/editions/tw5.com/tiddlers/demonstrations/SampleTabThree.tid
index a13ab5786..f5e3c205a 100644
--- a/editions/tw5.com/tiddlers/demonstrations/SampleTabThree.tid
+++ b/editions/tw5.com/tiddlers/demonstrations/SampleTabThree.tid
@@ -2,5 +2,6 @@ created: 20150221211557000
 title: SampleTabThree
 tags: sampletab
 order: 3
+tooltip: This tab specifies a tooltip only
 
 This is the third of our sample tabs.