diff --git a/templates/emails/summary-downtimes-html.html b/templates/emails/summary-downtimes-html.html
index b513d21e..f20f5ef7 100644
--- a/templates/emails/summary-downtimes-html.html
+++ b/templates/emails/summary-downtimes-html.html
@@ -1,5 +1,6 @@
 {% load humanize hc_extras %}
 {% regroup checks by project as groups %}
+{% spaceless %}
 <table style="margin: 0; width: 100%; font-size: 16px;" cellpadding="0" cellspacing="0">
     {% for group in groups %}
     <tr>
@@ -81,4 +82,5 @@
     {% endfor %}
     {% endfor %}
 </table>
-<br />
\ No newline at end of file
+<br />
+{% endspaceless %}
diff --git a/templates/emails/summary-html.html b/templates/emails/summary-html.html
index 396599e6..645d5243 100644
--- a/templates/emails/summary-html.html
+++ b/templates/emails/summary-html.html
@@ -1,5 +1,6 @@
 {% load humanize hc_extras %}
 {% regroup checks by project as groups %}
+{% spaceless %}
 <table style="margin: 0; width: 100%; font-size: 16px;" cellpadding="0" cellspacing="0">
     {% for group in groups %}
     <tr>
@@ -70,3 +71,4 @@
     {% endfor %}
 </table>
 <br />
+{% endspaceless %}
\ No newline at end of file