diff --git a/paddle/phi/api/yaml/generator/filters.py b/paddle/phi/api/yaml/generator/filters.py
index cda858ab6e74e9d639a969a2c60a82588e841daa..de9fdf25e9834cc3292fd9e76684a80c79cb9430 100644
--- a/paddle/phi/api/yaml/generator/filters.py
+++ b/paddle/phi/api/yaml/generator/filters.py
@@ -86,9 +86,9 @@ def to_opmaker_name(s):
 
 def to_opmaker_name_cstr(s):
     if s.endswith("_grad"):
-        return '"{}@GRAD"'.format(to_pascal_case(s[:-5]))
+        return '"{}@GRAD"'.format(s[:-5])
     else:
-        return '"{}"'.format(to_pascal_case(s))
+        return '"{}"'.format(s)
 
 
 def to_pascal_case(s):