diff --git a/src/pretix/base/templatetags/icon.py b/src/pretix/base/templatetags/icon.py
index 16f1eaa581..d71319b017 100644
--- a/src/pretix/base/templatetags/icon.py
+++ b/src/pretix/base/templatetags/icon.py
@@ -20,7 +20,7 @@
 # <https://www.gnu.org/licenses/>.
 #
 from django import template
-from django.utils.html import format_html, mark_safe
+from django.utils.html import format_html
 
 register = template.Library()
 
diff --git a/src/pretix/base/templatetags/textbubble.py b/src/pretix/base/templatetags/textbubble.py
index 4586e7265e..a0c3a3d301 100644
--- a/src/pretix/base/templatetags/textbubble.py
+++ b/src/pretix/base/templatetags/textbubble.py
@@ -36,6 +36,7 @@ def textbubble(type, *args, **kwargs):
         )
     )
 
+
 @register.simple_tag
 def endtextbubble():
     return mark_safe('</span>')