diff --git a/sbas/templates/sbas/exam_take.html b/sbas/templates/sbas/exam_take.html
index 547bf5d4..b3247210 100755
--- a/sbas/templates/sbas/exam_take.html
+++ b/sbas/templates/sbas/exam_take.html
@@ -22,7 +22,7 @@ CID: {{cid}}
 {{form}}
 
 {% if previous > -1 %}
-<button type="submit" name="previous" class="btn btn-previous"Previous question</button>
+<button type="submit" name="previous" class="btn btn-previous">Previous question</button>
 {% endif %}
 {% if next %}
 <button type="submit" name="next" class="save btn btn-default">Next</button>