diff --git a/plinth/modules/upgrades/privileged.py b/plinth/modules/upgrades/privileged.py
index 43a2c2ea3..c6e0b161f 100644
--- a/plinth/modules/upgrades/privileged.py
+++ b/plinth/modules/upgrades/privileged.py
@@ -249,7 +249,8 @@ def _check_and_backports_sources(develop=False):
         with open('/etc/dpkg/origins/default', 'r',
                   encoding='utf-8') as default_origin:
             matches = [
-                re.match(r'Vendor:\s+Debian', line, flags=re.IGNORECASE)
+                re.match(r'Vendor:\s+(Debian|FreedomBox)', line,
+                         flags=re.IGNORECASE)
                 for line in default_origin.readlines()
             ]
     except FileNotFoundError: