diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index c155de6b42507575d190c2a7c2f90e8466b4f97d..c320929de754899c5a3d800a5d0374d18c61e6b8 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -6,6 +6,14 @@ All notable changes to this project will be documented in this file.
The format is based on `Keep a Changelog`_,
and this project adheres to `Semantic Versioning`_.
+Unreleased
+----------
+
+Fixed
+~~~~~
+
+* Lesson view didn't work due to additional whitespaces in ``url`` tags.
+
`2.0rc2`_ - 2021-06-26
----------------------
diff --git a/aleksis/apps/alsijil/templates/alsijil/class_register/lesson.html b/aleksis/apps/alsijil/templates/alsijil/class_register/lesson.html
index 184846783b16f8803fb2297e7c519c561230d46f..0845ecc51c69579a63b716be947de8ca05dfd1ff 100644
--- a/aleksis/apps/alsijil/templates/alsijil/class_register/lesson.html
+++ b/aleksis/apps/alsijil/templates/alsijil/class_register/lesson.html
@@ -25,7 +25,7 @@
{# Next lesson #}
{% if prev_lesson_person %}
<a class="btn primary waves-effect waves-light alsijil-top-button"
- href="{% url " lesson_period" prev_lesson_person.week.year prev_lesson_person.week.week prev_lesson_person.id %}">
+ href="{% url "lesson_period" prev_lesson_person.week.year prev_lesson_person.week.week prev_lesson_person.id %}">
<i class="material-icons left">arrow_back</i>
{% trans "My previous lesson" %}
</a>
@@ -34,7 +34,7 @@
{# Previous lesson #}
{% if next_lesson_person %}
<a class="btn primary right waves-effect waves-light alsijil-top-button"
- href="{% url " lesson_period" next_lesson_person.week.year next_lesson_person.week.week next_lesson_person.id %}">
+ href="{% url "lesson_period" next_lesson_person.week.year next_lesson_person.week.week next_lesson_person.id %}">
<i class="material-icons right">arrow_forward</i>
{% trans "My next lesson" %}
</a>