diff --git a/src/views/emails.html b/src/views/emails.html
index 02f7c17bc..b733510bf 100644
--- a/src/views/emails.html
+++ b/src/views/emails.html
@@ -69,7 +69,7 @@
         <form name="maxEmailSizeChangeForm" role="form" novalidate ng-submit="maxEmailSize.submit()" autocomplete="off">
           <div class="form-group">
             <label class="control-label">Maximum size in megabytes : <b>{{ maxEmailSize.size | prettyDiskSize }}</b></label>
-            <slider ng-model="maxEmailSize.size" tooltip="hide" min="1048576" max="1073741824" step="10485760"></slider>
+            <slider ng-model="maxEmailSize.size" tooltip="hide" min="1048576" max="1073741824" step="1048576"></slider>
           </div>
           <input class="ng-hide" type="submit"/>
         </form>