diff --git a/book/controller.rst b/book/controller.rst
index b5ea88967c9..6916753b236 100644
--- a/book/controller.rst
+++ b/book/controller.rst
@@ -686,23 +686,19 @@ the ``notice`` message:
 
     .. code-block:: html+jinja
 
-        {% if app.session.started %}
-            {% for flashMessage in app.session.flashbag.get('notice') %}
-                <div class="flash-notice">
-                    {{ flashMessage }}
-                </div>
-            {% endfor %}
-        {% endif %}
+        {% for flashMessage in app.session.flashbag.get('notice') %}
+            <div class="flash-notice">
+                {{ flashMessage }}
+            </div>
+        {% endfor %}
 
     .. code-block:: html+php
 
-        <?php if ($view['session']->isStarted()): ?>
-            <?php foreach ($view['session']->getFlashBag()->get('notice') as $message): ?>
-                <div class="flash-notice">
-                    <?php echo "<div class='flash-error'>$message</div>" ?>
-                </div>
-            <?php endforeach; ?>
-        <?php endif; ?>
+        <?php foreach ($view['session']->getFlashBag()->get('notice') as $message): ?>
+            <div class="flash-notice">
+                <?php echo "<div class='flash-error'>$message</div>" ?>
+            </div>
+        <?php endforeach; ?>
 
 By design, flash messages are meant to live for exactly one request (they're
 "gone in a flash"). They're designed to be used across redirects exactly as
diff --git a/components/http_foundation/sessions.rst b/components/http_foundation/sessions.rst
index 559d699eae0..dbd855f4bf0 100644
--- a/components/http_foundation/sessions.rst
+++ b/components/http_foundation/sessions.rst
@@ -333,16 +333,3 @@ Compact method to process display all flashes at once::
             echo "<div class='flash-$type'>$message</div>\n";
         }
     }
-
-.. caution::
-
-    As flash messages use a session to store the messages from one request to
-    the next one, a session will be automatically started when you read the
-    flash messages even if none already exists. To avoid that default
-    behavior, test if there is an existing session first::
-
-        if ($session->isStarted()) {
-            foreach ($session->getFlashBag()->get('warning', array()) as $message) {
-                echo "<div class='flash-warning'>$message</div>";
-            }
-        }
diff --git a/quick_tour/the_controller.rst b/quick_tour/the_controller.rst
index 67b66b8b60f..c11c5473140 100755
--- a/quick_tour/the_controller.rst
+++ b/quick_tour/the_controller.rst
@@ -141,11 +141,9 @@ next request::
 
     // display any messages back in the next request (in a template)
 
-    {% if app.session.started %}
-        {% for flashMessage in app.session.flashbag.get('notice') %}
-            <div>{{ flashMessage }}</div>
-        {% endfor %}
-    {% endif %}
+    {% for flashMessage in app.session.flashbag.get('notice') %}
+        <div>{{ flashMessage }}</div>
+    {% endfor %}
 
 This is useful when you need to set a success message before redirecting
 the user to another page (which will then show the message). Please note that