diff --git a/src/Kiota.Builder/Refiners/PythonRefiner.cs b/src/Kiota.Builder/Refiners/PythonRefiner.cs
index 1cb92885d9..639e3403da 100644
--- a/src/Kiota.Builder/Refiners/PythonRefiner.cs
+++ b/src/Kiota.Builder/Refiners/PythonRefiner.cs
@@ -182,6 +182,18 @@ private static void CorrectCommonNames(CodeElement currentElement)
             {
                 param.Name = param.Name.ToFirstCharacterLowerCase().ToSnakeCase();
             }
+            if (parentClassM.IsOfKind(CodeClassKind.Model))
+            {
+                foreach (var prop in parentClassM.Properties)
+                {
+                    if (string.IsNullOrEmpty(prop.SerializationName))
+                    {
+                        prop.SerializationName = prop.Name;
+                    }
+
+                    parentClassM.RenameChildElement(prop.Name, prop.Name.ToFirstCharacterLowerCase().ToSnakeCase());
+                }
+            }
         }
         else if (currentElement is CodeClass c)
         {
@@ -191,7 +203,6 @@ private static void CorrectCommonNames(CodeElement currentElement)
             (p.IsOfKind(CodePropertyKind.RequestAdapter) ||
             p.IsOfKind(CodePropertyKind.PathParameters) ||
             p.IsOfKind(CodePropertyKind.QueryParameters) ||
-            p.IsOfKind(CodePropertyKind.Custom) ||
             p.IsOfKind(CodePropertyKind.UrlTemplate)) &&
             currentElement.Parent is CodeClass parentClassP)
         {
diff --git a/tests/Kiota.Builder.Tests/Refiners/PythonLanguageRefinerTests.cs b/tests/Kiota.Builder.Tests/Refiners/PythonLanguageRefinerTests.cs
index 564d38b72e..ce50b0d849 100644
--- a/tests/Kiota.Builder.Tests/Refiners/PythonLanguageRefinerTests.cs
+++ b/tests/Kiota.Builder.Tests/Refiners/PythonLanguageRefinerTests.cs
@@ -278,7 +278,7 @@ public async Task CorrectsCoreType()
         var model = root.AddClass(new CodeClass
         {
             Name = "model",
-            Kind = CodeClassKind.Model
+            Kind = CodeClassKind.RequestBuilder
         }).First();
         model.AddProperty(new CodeProperty
         {