diff --git a/python/paddle/utils/cpp_extension/extension_utils.py b/python/paddle/utils/cpp_extension/extension_utils.py
index 9ccbec0fc9eb8..04c4470daa8e8 100644
--- a/python/paddle/utils/cpp_extension/extension_utils.py
+++ b/python/paddle/utils/cpp_extension/extension_utils.py
@@ -560,7 +560,7 @@ def normalize_extension_kwargs(kwargs, use_cuda=False):
     kwargs['library_dirs'] = library_dirs
 
     # append compile flags and check settings of compiler
-    extra_compile_args = kwargs.get('extra_compile_args', [])
+    extra_compile_args = kwargs.get('extra_compile_args', {})
     if isinstance(extra_compile_args, dict):
         for compiler in ['cxx', 'nvcc']:
             if compiler not in extra_compile_args: