diff --git a/miio/protocol.py b/miio/protocol.py
index 0a7a0158d..3195e7acd 100644
--- a/miio/protocol.py
+++ b/miio/protocol.py
@@ -189,6 +189,8 @@ def _decode(self, obj, context, path) -> Union[Dict, bytes]:
             lambda decrypted_bytes: decrypted_bytes.replace(
                 b'"value":00', b'"value":0'
             ),
+            # fix double commas for xiaomi.vacuum.b112, fw: 2.2.4_0049
+            lambda decrypted_bytes: decrypted_bytes.replace(b",,", b","),
         ]
 
         for i, quirk in enumerate(decrypted_quirks):