diff --git a/src/Microsoft.DotNet.Wpf/src/PresentationFramework/System/Windows/Documents/TextStore.cs b/src/Microsoft.DotNet.Wpf/src/PresentationFramework/System/Windows/Documents/TextStore.cs
index eca91af61995aea85de54114b28ec710890c05c1..ac7c8d4ab04cce465b859c59b8477b37200bd626 100644
--- a/src/Microsoft.DotNet.Wpf/src/PresentationFramework/System/Windows/Documents/TextStore.cs
+++ b/src/Microsoft.DotNet.Wpf/src/PresentationFramework/System/Windows/Documents/TextStore.cs
@@ -586,7 +586,7 @@ public void GetEmbedded(int index, ref Guid guidService, ref Guid riid, out obje
         }
 
         // See msdn's ITextStoreACP documentation for a full description.
-        public void QueryInsertEmbedded(ref Guid guidService, int formatEtc, out bool insertable)
+        public void QueryInsertEmbedded(ref Guid guidService, IntPtr formatEtc, out bool insertable)
         {
 #if true
             //
diff --git a/src/Microsoft.DotNet.Wpf/src/Shared/MS/Win32/UnsafeNativeMethodsTextServices.cs b/src/Microsoft.DotNet.Wpf/src/Shared/MS/Win32/UnsafeNativeMethodsTextServices.cs
index 4de87412c39d0d7cfb9b9bda8d8f16986d8a83cf..aa4fd7786ef22c879534f5e4313db70e0539af39 100644
--- a/src/Microsoft.DotNet.Wpf/src/Shared/MS/Win32/UnsafeNativeMethodsTextServices.cs
+++ b/src/Microsoft.DotNet.Wpf/src/Shared/MS/Win32/UnsafeNativeMethodsTextServices.cs
@@ -1630,7 +1630,7 @@ public interface ITextStoreACP
             //HRESULT QueryInsertEmbedded([in] const GUID *pguidService,
             //                            [in] const FORMATETC *pFormatEtc,
             //                            [out] BOOL *pfInsertable);
-            void QueryInsertEmbedded(ref Guid guidService, int /*ref Win32.FORMATETC*/ formatEtc, [MarshalAs(UnmanagedType.Bool)] out bool insertable);
+            void QueryInsertEmbedded(ref Guid guidService, IntPtr /*ref Win32.FORMATETC*/ formatEtc, [MarshalAs(UnmanagedType.Bool)] out bool insertable);
 
             /// <summary></summary>
             //HRESULT InsertEmbedded([in] DWORD dwFlags,