diff --git a/qlinks/settings/base.py b/qlinks/settings/base.py
index e27ee9a..5614f19 100644
--- a/qlinks/settings/base.py
+++ b/qlinks/settings/base.py
@@ -92,3 +92,4 @@ QLINKS_CHECK_MIN = timedelta(days=6)
 QLINKS_CHECK_MAX = timedelta(days=8)
 QLINKS_CHECK_THROTTLE = 1
 QLINKS_BROKEN_EMAIL = False
+QLINKS_POWERED_BY = 'QLinks <https://github.com/quantum5/qlinks>'
diff --git a/qlinks/settings/template.py b/qlinks/settings/template.py
index 2ba2fee..beb5ffc 100644
--- a/qlinks/settings/template.py
+++ b/qlinks/settings/template.py
@@ -77,3 +77,7 @@ QLINKS_CANONICAL = None
 
 # Enable emails.
 # QLINKS_BROKEN_EMAIL = True
+
+# Update the X-Powered-By header to point to your fork if you are not running
+# upstream code. This is required to comply with AGPLv3.
+# QLINKS_POWERED_BY = 'QLinks <https://github.com/YOU/qlinks>'
diff --git a/qlinks/views.py b/qlinks/views.py
index 5346491..b3255dc 100644
--- a/qlinks/views.py
+++ b/qlinks/views.py
@@ -1,9 +1,12 @@
+from django.conf import settings
 from django.http import HttpResponseRedirect
-from django.shortcuts import get_object_or_404, render
+from django.shortcuts import get_object_or_404
 
 from qlinks.models import Link
 
 
 def short_link(request, slug):
     link = get_object_or_404(Link.objects.values_list('long', flat=True), short=slug)
-    return HttpResponseRedirect(link)
+    return HttpResponseRedirect(link, headers={
+        'X-Powered-By': settings.QLINKS_POWERED_BY
+    })