diff --git a/lib/Explain/Controller.pm b/lib/Explain/Controller.pm
index 446311e..a89924b 100755
--- a/lib/Explain/Controller.pm
+++ b/lib/Explain/Controller.pm
@@ -235,7 +235,7 @@ sub index {
         $self->app->log->info( $EVAL_ERROR );
 
         # leave...
-        return $self->render( message => q|Failed to parse your plan| );
+        return $self->render( 'message' => q|Failed to parse your plan:|, 'details' => $EVAL_ERROR );
     }
 
     # save to database
diff --git a/public/css/style.css b/public/css/style.css
index afca9d0..4b34c07 100755
--- a/public/css/style.css
+++ b/public/css/style.css
@@ -138,6 +138,7 @@ footer a:hover          {color:#e80}
 
 div.message { border: 2px solid #f00; padding: 0.5em; text-align: center; background: #600; }
 div.message p.message { font-weight: bold; font-size: 2em; color: #ff0; padding: 0; margin: 0; margin-bottom: 1em; }
+div.message p.details { background: #300; font-weight: normal; font-size: 1.5em; color: #cc0; padding: 10px; margin-left: 32px; margin-right: 32px; margin-bottom: 1em; text-align: left; border: 1px solid #ff0; }
 div.message p.messageSimple { margin-bottom: 0.5em; margin-top: 0.5em; }
 div.message p.hint { color: #ff0; padding: 0; margin: 0; }
 div.message p.hint a { color: #ff0; }
diff --git a/templates/controller/index.html.ep b/templates/controller/index.html.ep
index 237b3e4..c5a8f4f 100755
--- a/templates/controller/index.html.ep
+++ b/templates/controller/index.html.ep
@@ -9,6 +9,9 @@
 % if ( stash( 'message' ) ) {
     <div class="message">
     <p class="message"><%= stash( 'message' ) =%></p>
+    % if ( stash( 'details' ) ) {
+        <p class="details"><%= stash( 'details' ) =%></p>
+    % }
     <p class="hint">You might want to <a href="<%= url_for 'contact' %>">contact</a> me if you think that the problem is on <a href="http://explain.depesz.com/">explain.depesz.com</a> side.</p>
     </div>
 % }