diff --git a/tools/bbf_common.py b/tools/bbf_common.py
index 87206d9a..a220f376 100755
--- a/tools/bbf_common.py
+++ b/tools/bbf_common.py
@@ -367,6 +367,10 @@ def download_and_build_plugins(plugins, vendor_prefix):
         elif proto == "local":
             repo_path = repo
             print(f'    Processing {get_repo_version_info(repo, proto)}')
+        else:
+            BBF_ERROR_CODE += 1
+            print(f"Unknown protocol: {proto}")
+            continue
 
         LIST_FILES = []
         os.chdir(repo_path)
diff --git a/tools/convert_dm_xml_to_json.py b/tools/convert_dm_xml_to_json.py
index a2e7f99a..f47a273c 100755
--- a/tools/convert_dm_xml_to_json.py
+++ b/tools/convert_dm_xml_to_json.py
@@ -803,6 +803,9 @@ def chech_obj_with_other_obj(obj, dmobject):
 
 
 def object_parse_childs(dmobject, level, generatelist, check_obj):
+    obj = None
+    exist = 0
+
     if generatelist == 0 and (dmobject.get('name')).count(".") == 2:
         generatelistfromfile(dmobject)
     if check_obj == 1 and ("tr-181" in sys.argv[1] or "tr-104" in sys.argv[1]):