diff --git a/tests/Kiota.Builder.Tests/Writers/CSharp/CodePropertyWriterTests.cs b/tests/Kiota.Builder.Tests/Writers/CSharp/CodePropertyWriterTests.cs
index 3196b658f1..66f58c73f9 100644
--- a/tests/Kiota.Builder.Tests/Writers/CSharp/CodePropertyWriterTests.cs
+++ b/tests/Kiota.Builder.Tests/Writers/CSharp/CodePropertyWriterTests.cs
@@ -42,6 +42,7 @@ public CodePropertyWriterTests()
                 Name = TypeName,
                 TypeDefinition = derivedClass
             },
+            SerializationName = "propertyName",
         };
         parentClass.AddProperty(property, new()
         {
diff --git a/tests/Kiota.Builder.Tests/Writers/Php/CodeMethodWriterTests.cs b/tests/Kiota.Builder.Tests/Writers/Php/CodeMethodWriterTests.cs
index bee0dd083a..162173a82b 100644
--- a/tests/Kiota.Builder.Tests/Writers/Php/CodeMethodWriterTests.cs
+++ b/tests/Kiota.Builder.Tests/Writers/Php/CodeMethodWriterTests.cs
@@ -799,7 +799,7 @@ public async Task WriteIndexerBody()
         },
         new object[]
         {
-            new CodeProperty { Name = "DOB", Type = new CodeType { Name = "DateTimeOffset" }, Access = AccessModifier.Private, Kind = CodePropertyKind.Custom },
+            new CodeProperty { Name = "DOB", Type = new CodeType { Name = "DateTimeOffset" }, Access = AccessModifier.Private, Kind = CodePropertyKind.Custom, SerializationName = "dOB" },
             "'dOB' => fn(ParseNode $n) => $o->setDOB($n->getDateTimeValue()),"
         },
         new object[]