diff --git a/src/templates/layers-list.html b/src/templates/layers-list.html
index 88ecdd6c..0e18240e 100644
--- a/src/templates/layers-list.html
+++ b/src/templates/layers-list.html
@@ -38,8 +38,8 @@
data-layer-index="{{layerindex}}">
{{layername}}
- {{opacity}}α
+ title="Layer opacity ({{opacity}})" rel="tooltip" data-placement="top">
+ α