diff --git a/src/Symfony/Bundle/TwigBundle/Resources/views/Exception/trace.html.twig b/src/Symfony/Bundle/TwigBundle/Resources/views/Exception/trace.html.twig
index cc2e0ddf22..5df02f1b80 100644
--- a/src/Symfony/Bundle/TwigBundle/Resources/views/Exception/trace.html.twig
+++ b/src/Symfony/Bundle/TwigBundle/Resources/views/Exception/trace.html.twig
@@ -12,8 +12,8 @@
     in {{ trace.file|format_file(trace.line) }} 
     {% spaceless %}
     <a href="#" onclick="toggle('trace_{{ prefix ~ '_' ~ i }}'); switchIcons('icon_{{ prefix ~ '_' ~ i }}_open', 'icon_{{ prefix ~ '_' ~ i }}_close'); return false;">
-        <img class="toggle" id="icon_{{ prefix ~ '_' ~ i }}_close" alt="-" src="{{ asset('bundles/framework/images/blue_picto_less.gif') }}" style="visibility: {{ 0 == i ? 'display' : 'hidden' }}" />
-        <img class="toggle" id="icon_{{ prefix ~ '_' ~ i }}_open" alt="+" src="{{ asset('bundles/framework/images/blue_picto_more.gif') }}" style="visibility: {{ 0 == i ? 'hidden' : 'display' }}; margin-left: -18px" />
+        <img class="toggle" id="icon_{{ prefix ~ '_' ~ i }}_close" alt="-" src="{{ asset('bundles/framework/images/blue_picto_less.gif') }}" style="visibility: {{ 0 == i ? 'visible' : 'hidden' }}" />
+        <img class="toggle" id="icon_{{ prefix ~ '_' ~ i }}_open" alt="+" src="{{ asset('bundles/framework/images/blue_picto_more.gif') }}" style="visibility: {{ 0 == i ? 'hidden' : 'visible' }}; margin-left: -18px" />
     </a>
     {% endspaceless %}
     <div id="trace_{{ prefix ~ '_' ~ i }}" style="display: {{ 0 == i ? 'block' : 'none' }}" class="trace">
diff --git a/src/Symfony/Bundle/TwigBundle/Resources/views/Exception/traces.html.twig b/src/Symfony/Bundle/TwigBundle/Resources/views/Exception/traces.html.twig
index da0b5b8dd1..5ee11ee836 100644
--- a/src/Symfony/Bundle/TwigBundle/Resources/views/Exception/traces.html.twig
+++ b/src/Symfony/Bundle/TwigBundle/Resources/views/Exception/traces.html.twig
@@ -5,8 +5,8 @@
             {{ exception.class|abbr_class }}: {{ exception.message|e|replace({"\n": '<br />'})|format_file_from_text }}&nbsp;
             {% spaceless %}
             <a href="#" onclick="toggle('traces_{{ position }}', 'traces'); switchIcons('icon_traces_{{ position }}_open', 'icon_traces_{{ position }}_close'); return false;">
-                <img class="toggle" id="icon_traces_{{ position }}_close" alt="-" src="{{ asset('bundles/framework/images/blue_picto_less.gif') }}" style="visibility: {{ 0 == count ? 'display' : 'hidden' }}" />
-                <img class="toggle" id="icon_traces_{{ position }}_open" alt="+" src="{{ asset('bundles/framework/images/blue_picto_more.gif') }}" style="visibility: {{ 0 == count ? 'hidden' : 'display' }}; margin-left: -18px" />
+                <img class="toggle" id="icon_traces_{{ position }}_close" alt="-" src="{{ asset('bundles/framework/images/blue_picto_less.gif') }}" style="visibility: {{ 0 == count ? 'visible' : 'hidden' }}" />
+                <img class="toggle" id="icon_traces_{{ position }}_open" alt="+" src="{{ asset('bundles/framework/images/blue_picto_more.gif') }}" style="visibility: {{ 0 == count ? 'hidden' : 'visible' }}; margin-left: -18px" />
             </a>
             {% endspaceless %}
         </h2>