diff --git a/inventory_provider/tasks/data.py b/inventory_provider/tasks/data.py
index 4f01fb37139df58fde6eeff789fcf2374c494baf..4c8cd82c0507db4c7eba13c524b4ddb0960e602e 100644
--- a/inventory_provider/tasks/data.py
+++ b/inventory_provider/tasks/data.py
@@ -18,12 +18,17 @@ def build_service_interface_user_list(config):
         r = get_next_redis(config)
         for k in r.scan_iter('netconf-interfaces:*'):
             k = k.decode('utf-8')
-            (_, router_name, ifc_name) = k.split(':')
+            m = re.match('^netconf-interfaces:([^:]+):(.+)$', k)
+            if not m:
+                logger.error(f'unexpected redis key: "{k}"')
+                continue  # skip, rather than fail the entire update
+            router_name = m.group(1)
+            ifc_name = m.group(2)
 
             info = r.get(k).decode('utf-8')
             info = json.loads(info)
 
-            assert ifc_name == info['name']
+            assert ifc_name == info['name']  # sanity
             yield {
                 'router': router_name,
                 'interface': info['name'],