diff --git a/src/StrawberryShake/CodeGeneration/src/CodeGeneration.CSharp/Generators/OperationServiceGenerator.cs b/src/StrawberryShake/CodeGeneration/src/CodeGeneration.CSharp/Generators/OperationServiceGenerator.cs
index ff8ca85b7a9..2d4d532bda6 100644
--- a/src/StrawberryShake/CodeGeneration/src/CodeGeneration.CSharp/Generators/OperationServiceGenerator.cs
+++ b/src/StrawberryShake/CodeGeneration/src/CodeGeneration.CSharp/Generators/OperationServiceGenerator.cs
@@ -555,7 +555,7 @@ private static ICode BuildUploadFileMapper(
                             .New()
                             .SetMethodName(_files, "Add")
                             .AddArgument(pathVariable)
-                            .AddArgument($"{variable} is {TypeNames.Upload} u ? u : null"));
+                            .AddArgument($"{variable} is {TypeNames.Upload} {variable}_u ? {variable}_u : null"));
             }
             default:
                 throw ThrowHelper.OperationServiceGenerator_HasNoUploadScalar(typeReference);