diff --git a/src/NodeApi.DotNetHost/JSMarshaller.cs b/src/NodeApi.DotNetHost/JSMarshaller.cs
index 07f31c70..427d001e 100644
--- a/src/NodeApi.DotNetHost/JSMarshaller.cs
+++ b/src/NodeApi.DotNetHost/JSMarshaller.cs
@@ -163,7 +163,7 @@ public static string ToCamelCase(string name)
         return name;
     }
 
-    private Expression JSMemberNameExpression(MemberInfo member)
+    private UnaryExpression JSMemberNameExpression(MemberInfo member)
     {
         string name = member.Name;
         int lastDotIndex = name.LastIndexOf('.');