diff --git a/src/coreclr/src/tools/crossgen2/Common/TypeSystem/Interop/IL/Marshaller.cs b/src/coreclr/src/tools/crossgen2/Common/TypeSystem/Interop/IL/Marshaller.cs
index fdb64f889e76757aa96f00454d43194e4848f13c..f037e12b7808c4c7e797c1a35ba341246e80d5ae 100644
--- a/src/coreclr/src/tools/crossgen2/Common/TypeSystem/Interop/IL/Marshaller.cs
+++ b/src/coreclr/src/tools/crossgen2/Common/TypeSystem/Interop/IL/Marshaller.cs
@@ -1435,6 +1435,11 @@ protected override void AllocAndTransformManagedToNative(ILCodeStream codeStream
             {
                 ILLocalVariable vPinnedFirstElement = emitter.NewLocal(ManagedElementType.MakeByRefType(), true);
 
+                LoadManagedValue(codeStream);
+                codeStream.Emit(ILOpcode.ldlen);
+                codeStream.Emit(ILOpcode.conv_i4);
+                codeStream.Emit(ILOpcode.brfalse, lNullArray);
+
                 LoadManagedValue(codeStream);
                 codeStream.Emit(ILOpcode.call, emitter.NewToken(getRawSzArrayDataMethod));
                 codeStream.EmitStLoc(vPinnedFirstElement);