diff --git a/index.html b/index.html
index cf1b2f49e..9e611c2b1 100644
--- a/index.html
+++ b/index.html
@@ -646,7 +646,7 @@
                   <div class="row collapse">
                     <label for="amount">Amount
                       <small ng-hide="!sendForm.amount.$pristine">required</small>
-                      <i class="fi-arrow-up" ng-click="topAmount()"></i>
+                      <i class="fi-arrow-up" title="Send all funds" ng-click="topAmount()"></i>
                       <small class="is-valid" ng-show="!sendForm.amount.$invalid && !sendForm.amount.$pristine">Valid</small>
                       <small class="has-error" ng-show="sendForm.amount.$invalid && !sendForm.amount.$pristine && !notEnoughAmount">
                         Not valid