diff --git a/src/ukify/ukify.py b/src/ukify/ukify.py
index 0377c57ea7..59078c98aa 100755
--- a/src/ukify/ukify.py
+++ b/src/ukify/ukify.py
@@ -1762,6 +1762,8 @@ class ConfigItem:
         old = getattr(namespace, dest, [])
         if old is None:
             old = []
+        if not isinstance(value, list):
+            value = [value]
         setattr(namespace, dest, value + old)
 
     @staticmethod