diff --git a/src/pretix/base/context.py b/src/pretix/base/context.py
index 6f2e63ce18..4a0c024b81 100644
--- a/src/pretix/base/context.py
+++ b/src/pretix/base/context.py
@@ -30,7 +30,7 @@ from pretix.base.settings import GlobalSettingsObject
 from pretix.base.templatetags.safelink import safelink as sl
 
 
-def get_powered_by(safelink=True):
+def get_powered_by(request, safelink=True):
     gs = GlobalSettingsObject()
     d = gs.settings.license_check_input
     if d.get('poweredby_name'):
@@ -57,7 +57,7 @@ def get_powered_by(safelink=True):
 
     if d.get('base_license') == 'agpl':
         msg += ' (<a href="{}" target="_blank" rel="noopener">{}</a>)'.format(
-            reverse('source'),
+            request.build_absolute_uri(reverse('source')),
             gettext('source code')
         )
 
@@ -69,7 +69,7 @@ def contextprocessor(request):
         'rtl': getattr(request, 'LANGUAGE_CODE', 'en') in settings.LANGUAGES_RTL,
     }
     try:
-        ctx['poweredby'] = get_powered_by(safelink=True)
+        ctx['poweredby'] = get_powered_by(request, safelink=True)
     except Exception:
         ctx['poweredby'] = 'powered by <a href="https://pretix.eu/" target="_blank" rel="noopener">pretix</a>'
     if settings.DEBUG and 'runserver' not in sys.argv:
diff --git a/src/pretix/presale/views/widget.py b/src/pretix/presale/views/widget.py
index 2f31511f95..03ac67b60c 100644
--- a/src/pretix/presale/views/widget.py
+++ b/src/pretix/presale/views/widget.py
@@ -289,7 +289,7 @@ class WidgetAPIProductList(EventListMixin, View):
         return grps, display_add_to_cart, len(items)
 
     def post_process(self, data):
-        data['poweredby'] = get_powered_by(safelink=False)
+        data['poweredby'] = get_powered_by(self.request, safelink=False)
 
     def response(self, data):
         self.post_process(data)