diff --git a/modules/mono/glue/Managed/Files/NodePath.cs b/modules/mono/glue/Managed/Files/NodePath.cs
index 4de4e1e6a97..8c5872ba5ac 100644
--- a/modules/mono/glue/Managed/Files/NodePath.cs
+++ b/modules/mono/glue/Managed/Files/NodePath.cs
@@ -12,7 +12,7 @@ namespace Godot
         internal static IntPtr GetPtr(NodePath instance)
         {
             if (instance == null)
-                return IntPtr.Zero;
+                throw new NullReferenceException($"The instance of type {nameof(NodePath)} is null.");
 
             if (instance.disposed)
                 throw new ObjectDisposedException(instance.GetType().FullName);
diff --git a/modules/mono/glue/Managed/Files/RID.cs b/modules/mono/glue/Managed/Files/RID.cs
index 12064beca21..94761531b12 100644
--- a/modules/mono/glue/Managed/Files/RID.cs
+++ b/modules/mono/glue/Managed/Files/RID.cs
@@ -12,7 +12,7 @@ namespace Godot
         internal static IntPtr GetPtr(RID instance)
         {
             if (instance == null)
-                return IntPtr.Zero;
+                throw new NullReferenceException($"The instance of type {nameof(RID)} is null.");
 
             if (instance.disposed)
                 throw new ObjectDisposedException(instance.GetType().FullName);