diff --git a/roles/pkgdb2/templates/pkgdb2.cfg b/roles/pkgdb2/templates/pkgdb2.cfg
index df5b3b2181..59c4e18da4 100644
--- a/roles/pkgdb2/templates/pkgdb2.cfg
+++ b/roles/pkgdb2/templates/pkgdb2.cfg
@@ -110,3 +110,7 @@ PREFERRED_URL_SCHEME='https'
 
 # Make browsers send session cookie only via HTTPS
 SESSION_COOKIE_SECURE = True
+
+# Used by SESSION_COOKIE_PATH
+APPLICATION_ROOT = '/pkgdb/'
+