diff --git a/app/views/work_packages/calendars/index.html.erb b/app/views/work_packages/calendars/index.html.erb
index 26c99ef645..a269363727 100644
--- a/app/views/work_packages/calendars/index.html.erb
+++ b/app/views/work_packages/calendars/index.html.erb
@@ -28,55 +28,55 @@ See doc/COPYRIGHT.rdoc for more details.
 ++#%>
 <%= toolbar title: (@query.new_record? ? l(:label_calendar) : @query.name) %>
 <%= form_tag(work_packages_calendar_index_path, method: :get, id: 'query_form') do %>
-    <%= hidden_field_tag('project_id', @project.to_param) if @project %>
-    <%= hidden_field_tag('set_filter', 1) %>
-    <fieldset id="filters" class="form--fieldset -collapsible collapsed">
-      <legend class="form--fieldset-legend" onclick="toggleFieldset(this);">
-        <a href="javascript:"><%= l(:label_filter_plural) %></a></legend>
-      <div class="" style="display: none;">
-        <%= render partial: 'queries/filters', locals: { query: @query } %>
-      </div>
-    </fieldset>
-    <fieldset class="simple-filters--container">
-      <legend><%= l('timeframe.show') %></legend>
-      <ul class="simple-filters--filters">
-        <li class="simple-filters--filter">
-          <%= label_tag('month', l(:label_month), class: 'simple-filters--filter-name') %>
-          <%= select_month(@month, { prefix: "month", discard_type: true }, class: 'simple-filters--filter-value') %>
-        </li>
-        <li class="simple-filters--filter">
-          <%= label_tag('year', l(:label_year), class: 'simple-filters--filter-name') %>
-          <%= select_year(@year, { prefix: "year", discard_type: true }, class: 'simple-filters--filter-value') %>
-        </li>
-        <li class="simple-filters--controls">
-          <%= submit_tag l(:button_apply), class: 'button -highlight -small' %>
-        </li>
-      </ul>
-
-    </fieldset>
+  <%= hidden_field_tag('project_id', @project.to_param) if @project %>
+  <%= hidden_field_tag('set_filter', 1) %>
+  <fieldset id="filters" class="form--fieldset -collapsible <%= @query.valid? ? 'collapsed' : '' %>">
+    <legend class="form--fieldset-legend" onclick="toggleFieldset(this);">
+      <a href="javascript:"><%= l(:label_filter_plural) %></a>
+    </legend>
+    <div>
+      <%= render partial: 'queries/filters', locals: { query: @query } %>
+    </div>
+  </fieldset>
+  <fieldset class="simple-filters--container">
+    <legend><%= l('timeframe.show') %></legend>
+    <ul class="simple-filters--filters">
+      <li class="simple-filters--filter">
+        <%= label_tag('month', l(:label_month), class: 'simple-filters--filter-name') %>
+        <%= select_month(@month, { prefix: "month", discard_type: true }, class: 'simple-filters--filter-value') %>
+      </li>
+      <li class="simple-filters--filter">
+        <%= label_tag('year', l(:label_year), class: 'simple-filters--filter-name') %>
+        <%= select_year(@year, { prefix: "year", discard_type: true }, class: 'simple-filters--filter-value') %>
+      </li>
+      <li class="simple-filters--controls">
+        <%= submit_tag l(:button_apply), class: 'button -highlight -small' %>
+      </li>
+    </ul>
+  </fieldset>
 <% end %>
 <%= error_messages_for 'query' %>
 <% if @query.valid? %>
-    <p style="float:right;">
-      <%= link_to_previous_month(@year, @month, project: @project) %>
-      | <%= link_to_next_month(@year, @month, project: @project) %>
-    </p>
-    <%= render partial: 'common/calendar', locals: { calendar: @calendar } %>
-    <p class="legend cal">
-      <span class="starting icon icon-arrow-right4"></span>
-      <%= l(:text_tip_work_package_begin_day) %>
-    </p>
-    <p class="legend cal">
-      <span class="ending icon icon-arrow-right4"></span>
-      <%= l(:text_tip_work_package_end_day) %>
-    </p>
-    <p class="legend cal">
-      <span class="icon icon-milestone diamond"></span>
-      <%= l(:text_tip_work_package_begin_end_day) %>
-    </p>
+  <p style="float:right;">
+    <%= link_to_previous_month(@year, @month, project: @project) %>
+    | <%= link_to_next_month(@year, @month, project: @project) %>
+  </p>
+  <%= render partial: 'common/calendar', locals: { calendar: @calendar } %>
+  <p class="legend cal">
+    <span class="starting icon icon-arrow-right4"></span>
+    <%= l(:text_tip_work_package_begin_day) %>
+  </p>
+  <p class="legend cal">
+    <span class="ending icon icon-arrow-right4"></span>
+    <%= l(:text_tip_work_package_end_day) %>
+  </p>
+  <p class="legend cal">
+    <span class="icon icon-milestone diamond"></span>
+    <%= l(:text_tip_work_package_begin_end_day) %>
+  </p>
 <% end %>
 <% content_for :sidebar do %>
-    <%= render partial: 'work_packages/sidebar' %>
+  <%= render partial: 'work_packages/sidebar' %>
 <% end %>
 
 <% html_title(l(:label_calendar)) -%>