diff --git a/content/treestyletab/config.xul b/content/treestyletab/config.xul
index f764145e..9a031c71 100644
--- a/content/treestyletab/config.xul
+++ b/content/treestyletab/config.xul
@@ -750,9 +750,9 @@
 		<preference id="extensions.treestyletab.animation.enabled"
 			name="extensions.treestyletab.animation.enabled"
 			type="bool"/>
-		<preference id="extensions.treestyletab.tooltip.includeChildren"
-			name="extensions.treestyletab.tooltip.includeChildren"
-			type="bool"/>
+		<preference id="extensions.treestyletab.tooltip.mode"
+			name="extensions.treestyletab.tooltip.mode"
+			type="int"/>
 		<preference id="extensions.treestyletab.bookmarkDroppedTabs.behavior"
 			name="extensions.treestyletab.bookmarkDroppedTabs.behavior"
 			type="int"/>
@@ -764,9 +764,11 @@
 	<checkbox id="extensions.treestyletab.animation.enabled-check"
 		preference="extensions.treestyletab.animation.enabled"
 		label="&config.animation.enabled;"/>
-	<checkbox id="extensions.treestyletab.tooltip.includeChildren-check"
-		preference="extensions.treestyletab.tooltip.includeChildren"
-		label="&config.tooltip.includeChildren;"/>
+	<checkbox id="extensions.treestyletab.tooltip.mode-check"
+		preference="extensions.treestyletab.tooltip.mode"
+		label="&config.tooltip.includeChildren;"
+		onsynctopreference="return document.getElementById('extensions.treestyletab.tooltip.mode-check').checked ? 2 : 0 ;"
+		onsyncfrompreference="return document.getElementById('extensions.treestyletab.tooltip.mode').value == 2;"/>
 
 	<groupbox>
 		<caption label="&config.bookmarkDroppedTabs.caption;"/>