diff --git a/pyproject.toml b/pyproject.toml
index 90c77878cd526..1aed6656bd0eb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -98,7 +98,7 @@ select = [
     "B013",
     "B014",
     # "B015",
-    # "B016",
+    "B016",
     # "B017",
     "B018",
     "B019",
diff --git a/python/paddle/distributed/launch/plugins/__init__.py b/python/paddle/distributed/launch/plugins/__init__.py
index 4b2794a38acdc..b3b89e0f116df 100644
--- a/python/paddle/distributed/launch/plugins/__init__.py
+++ b/python/paddle/distributed/launch/plugins/__init__.py
@@ -39,7 +39,7 @@ def process_args(ctx):
     if ctx.args.ips:
         ips = ctx.args.ips.split(',')
         if '127.0.0.1' in ips and len(ips) != 1:
-            raise "127.0.0.1 in ips is not allowed in multi-nodes."
+            raise ValueError("127.0.0.1 in ips is not allowed in multi-nodes.")
 
 
 def collective_compatible(ctx):