diff --git a/securedrop/source_app/main.py b/securedrop/source_app/main.py
index 09213985972..2dbde5fe809 100644
--- a/securedrop/source_app/main.py
+++ b/securedrop/source_app/main.py
@@ -296,8 +296,12 @@ def login():
 
     @view.route('/logout')
     def logout():
+        """
+        If a user is logged in, show them a logout page that prompts them to
+        click the New Identity button in Tor Browser to complete their session.
+        Otherwise redirect to the main Source Interface page.
+        """
         if logged_in():
-            msg = render_template('logout_flashed_message.html')
 
             # Clear the session after we render the message so it's localized
             # If a user specified a locale, save it and restore it
@@ -305,7 +309,8 @@ def logout():
             session.clear()
             session['locale'] = user_locale
 
-            flash(Markup(msg), "important hide-if-not-tor-browser")
-        return redirect(url_for('.index'))
+            return render_template('logout.html')
+        else:
+            return redirect(url_for('.index'))
 
     return view
diff --git a/securedrop/source_templates/logout.html b/securedrop/source_templates/logout.html
new file mode 100644
index 00000000000..b1e27aea403
--- /dev/null
+++ b/securedrop/source_templates/logout.html
@@ -0,0 +1,5 @@
+{% extends "base.html" %}
+{% block body %}
+<h1>{{ gettext('One last thing') }}</h1>
+<p id="click-new-identity-tor">{{ gettext('Click the <strong>New Identity</strong> button in your Tor browser window to complete your session.') }}</p>
+{% endblock %}
diff --git a/securedrop/tests/functional/source_navigation_steps.py b/securedrop/tests/functional/source_navigation_steps.py
index 3778c30dc0e..7938d25417e 100644
--- a/securedrop/tests/functional/source_navigation_steps.py
+++ b/securedrop/tests/functional/source_navigation_steps.py
@@ -195,7 +195,8 @@ def reply_deleted():
 
     def _source_logs_out(self):
         self.safe_click_by_id("logout")
-        self.wait_for(lambda: ("Submit for the first time" in self.driver.page_source))
+        message = self.driver.find_element_by_id("click-new-identity-tor")
+        assert message.is_displayed()
 
     def _source_not_found(self):
         self.driver.get(self.source_location + "/unlikely")