diff --git a/dlls/combase/combase.spec b/dlls/combase/combase.spec
index 8bcac10cdc8..be5ed85a8e3 100644
--- a/dlls/combase/combase.spec
+++ b/dlls/combase/combase.spec
@@ -131,7 +131,7 @@
 @ stdcall CoLockObjectExternal(ptr long long) ole32.CoLockObjectExternal
 @ stdcall CoMarshalHresult(ptr long)
 @ stdcall CoMarshalInterThreadInterfaceInStream(ptr ptr ptr)
-@ stdcall CoMarshalInterface(ptr ptr ptr long ptr long) ole32.CoMarshalInterface
+@ stdcall CoMarshalInterface(ptr ptr ptr long ptr long)
 @ stub CoPopServiceDomain
 @ stub CoPushServiceDomain
 @ stub CoQueryAuthenticationServices
diff --git a/dlls/combase/marshal.c b/dlls/combase/marshal.c
index 3c577a9bff1..9a88be72368 100644
--- a/dlls/combase/marshal.c
+++ b/dlls/combase/marshal.c
@@ -411,3 +411,98 @@ HRESULT WINAPI CoGetMarshalSizeMax(ULONG *size, REFIID riid, IUnknown *unk,
     IMarshal_Release(marshal);
     return hr;
 }
+
+static void dump_mshflags(MSHLFLAGS flags)
+{
+    if (flags & MSHLFLAGS_TABLESTRONG)
+        TRACE(" MSHLFLAGS_TABLESTRONG");
+    if (flags & MSHLFLAGS_TABLEWEAK)
+        TRACE(" MSHLFLAGS_TABLEWEAK");
+    if (!(flags & (MSHLFLAGS_TABLESTRONG|MSHLFLAGS_TABLEWEAK)))
+        TRACE(" MSHLFLAGS_NORMAL");
+    if (flags & MSHLFLAGS_NOPING)
+        TRACE(" MSHLFLAGS_NOPING");
+}
+
+/***********************************************************************
+ *        CoMarshalInterface    (combase.@)
+ */
+HRESULT WINAPI CoMarshalInterface(IStream *stream, REFIID riid, IUnknown *unk,
+        DWORD dest_context, void *pvDestContext, DWORD mshlFlags)
+{
+    CLSID marshaler_clsid;
+    IMarshal *marshal;
+    HRESULT hr;
+
+    TRACE("%p, %s, %p, %x, %p, ", stream, debugstr_guid(riid), unk, dest_context, pvDestContext);
+    dump_mshflags(mshlFlags);
+    TRACE("\n");
+
+    if (!unk || !stream)
+        return E_INVALIDARG;
+
+    hr = IUnknown_QueryInterface(unk, &IID_IMarshal, (void **)&marshal);
+    if (hr != S_OK)
+        hr = CoGetStandardMarshal(riid, unk, dest_context, pvDestContext, mshlFlags, &marshal);
+    if (hr != S_OK)
+    {
+        ERR("Failed to get marshaller, %#x\n", hr);
+        return hr;
+    }
+
+    hr = IMarshal_GetUnmarshalClass(marshal, riid, unk, dest_context, pvDestContext, mshlFlags,
+            &marshaler_clsid);
+    if (hr != S_OK)
+    {
+        ERR("IMarshal::GetUnmarshalClass failed, %#x\n", hr);
+        goto cleanup;
+    }
+
+    /* FIXME: implement handler marshaling too */
+    if (IsEqualCLSID(&marshaler_clsid, &CLSID_StdMarshal))
+    {
+        TRACE("Using standard marshaling\n");
+    }
+    else
+    {
+        OBJREF objref;
+
+        TRACE("Using custom marshaling\n");
+        objref.signature = OBJREF_SIGNATURE;
+        objref.iid = *riid;
+        objref.flags = OBJREF_CUSTOM;
+        objref.u_objref.u_custom.clsid = marshaler_clsid;
+        objref.u_objref.u_custom.cbExtension = 0;
+        objref.u_objref.u_custom.size = 0;
+        hr = IMarshal_GetMarshalSizeMax(marshal, riid, unk, dest_context, pvDestContext, mshlFlags,
+                &objref.u_objref.u_custom.size);
+        if (hr != S_OK)
+        {
+            ERR("Failed to get max size of marshal data, error %#x\n", hr);
+            goto cleanup;
+        }
+        /* write constant sized common header and OR_CUSTOM data into stream */
+        hr = IStream_Write(stream, &objref, FIELD_OFFSET(OBJREF, u_objref.u_custom.pData), NULL);
+        if (hr != S_OK)
+        {
+            ERR("Failed to write OR_CUSTOM header to stream with %#x\n", hr);
+            goto cleanup;
+        }
+    }
+
+    TRACE("Calling IMarshal::MarshalInterface\n");
+
+    hr = IMarshal_MarshalInterface(marshal, stream, riid, unk, dest_context, pvDestContext, mshlFlags);
+    if (hr != S_OK)
+    {
+        ERR("Failed to marshal the interface %s, hr %#x\n", debugstr_guid(riid), hr);
+        goto cleanup;
+    }
+
+cleanup:
+    IMarshal_Release(marshal);
+
+    TRACE("completed with hr %#x\n", hr);
+
+    return hr;
+}
diff --git a/dlls/ole32/marshal.c b/dlls/ole32/marshal.c
index ea8432e2ee6..343d1c834f7 100644
--- a/dlls/ole32/marshal.c
+++ b/dlls/ole32/marshal.c
@@ -1689,26 +1689,6 @@ HRESULT WINAPI CoGetStandardMarshal(REFIID riid, IUnknown *pUnk,
     return StdMarshalImpl_Construct(&IID_IMarshal, dwDestContext, pvDestContext, (void**)ppMarshal);
 }
 
-/***********************************************************************
- *		get_marshaler	[internal]
- *
- * Retrieves an IMarshal interface for an object.
- */
-static HRESULT get_marshaler(REFIID riid, IUnknown *pUnk, DWORD dwDestContext,
-                             void *pvDestContext, DWORD mshlFlags,
-                             LPMARSHAL *pMarshal)
-{
-    HRESULT hr;
-
-    if (!pUnk)
-        return E_POINTER;
-    hr = IUnknown_QueryInterface(pUnk, &IID_IMarshal, (LPVOID*)pMarshal);
-    if (hr != S_OK)
-        hr = CoGetStandardMarshal(riid, pUnk, dwDestContext, pvDestContext,
-                                  mshlFlags, pMarshal);
-    return hr;
-}
-
 /***********************************************************************
  *		get_unmarshaler_from_stream	[internal]
  *
@@ -1777,135 +1757,6 @@ static HRESULT get_unmarshaler_from_stream(IStream *stream, IMarshal **marshal,
     return hr;
 }
 
-static void dump_MSHLFLAGS(MSHLFLAGS flags)
-{
-    if (flags & MSHLFLAGS_TABLESTRONG)
-        TRACE(" MSHLFLAGS_TABLESTRONG");
-    if (flags & MSHLFLAGS_TABLEWEAK)
-        TRACE(" MSHLFLAGS_TABLEWEAK");
-    if (!(flags & (MSHLFLAGS_TABLESTRONG|MSHLFLAGS_TABLEWEAK)))
-        TRACE(" MSHLFLAGS_NORMAL");
-    if (flags & MSHLFLAGS_NOPING)
-        TRACE(" MSHLFLAGS_NOPING");
-}
-
-/***********************************************************************
- *		CoMarshalInterface	[OLE32.@]
- *
- * Marshals an interface into a stream so that the object can then be
- * unmarshaled from another COM apartment and used remotely.
- *
- * PARAMS
- *  pStream       [I] Stream the object will be marshaled into.
- *  riid          [I] Identifier of the interface to marshal.
- *  pUnk          [I] Pointer to the object to marshal.
- *  dwDestContext [I] Destination. Used to enable or disable optimizations.
- *  pvDestContext [I] Reserved. Must be NULL.
- *  mshlFlags     [I] Flags that affect the marshaling. See notes.
- *
- * RETURNS
- *  Success: S_OK.
- *  Failure: HRESULT code.
- *
- * NOTES
- *
- * The mshlFlags parameter can take one or more of the following flags:
- *| MSHLFLAGS_NORMAL - Unmarshal once, releases stub on last proxy release.
- *| MSHLFLAGS_TABLESTRONG - Unmarshal many, release when CoReleaseMarshalData() called.
- *| MSHLFLAGS_TABLEWEAK - Unmarshal many, releases stub on last proxy release.
- *| MSHLFLAGS_NOPING - No automatic garbage collection (and so reduces network traffic).
- *
- * If a marshaled object is not unmarshaled, then CoReleaseMarshalData() must
- * be called in order to release the resources used in the marshaling.
- *
- * SEE ALSO
- *  CoUnmarshalInterface(), CoReleaseMarshalData().
- */
-HRESULT WINAPI CoMarshalInterface(IStream *pStream, REFIID riid, IUnknown *pUnk,
-                                  DWORD dwDestContext, void *pvDestContext,
-                                  DWORD mshlFlags)
-{
-    HRESULT	hr;
-    CLSID marshaler_clsid;
-    LPMARSHAL pMarshal;
-
-    TRACE("(%p, %s, %p, %x, %p, ", pStream, debugstr_guid(riid), pUnk,
-        dwDestContext, pvDestContext);
-    dump_MSHLFLAGS(mshlFlags);
-    TRACE(")\n");
-
-    if (!pUnk || !pStream)
-        return E_INVALIDARG;
-
-    /* get the marshaler for the specified interface */
-    hr = get_marshaler(riid, pUnk, dwDestContext, pvDestContext, mshlFlags, &pMarshal);
-    if (hr != S_OK)
-    {
-        ERR("Failed to get marshaller, 0x%08x\n", hr);
-        return hr;
-    }
-
-    hr = IMarshal_GetUnmarshalClass(pMarshal, riid, pUnk, dwDestContext,
-                                    pvDestContext, mshlFlags, &marshaler_clsid);
-    if (hr != S_OK)
-    {
-        ERR("IMarshal::GetUnmarshalClass failed, 0x%08x\n", hr);
-        goto cleanup;
-    }
-
-    /* FIXME: implement handler marshaling too */
-    if (IsEqualCLSID(&marshaler_clsid, &CLSID_StdMarshal))
-    {
-        TRACE("Using standard marshaling\n");
-    }
-    else
-    {
-        OBJREF objref;
-
-        TRACE("Using custom marshaling\n");
-        objref.signature = OBJREF_SIGNATURE;
-        objref.iid = *riid;
-        objref.flags = OBJREF_CUSTOM;
-        objref.u_objref.u_custom.clsid = marshaler_clsid;
-        objref.u_objref.u_custom.cbExtension = 0;
-        objref.u_objref.u_custom.size = 0;
-        hr = IMarshal_GetMarshalSizeMax(pMarshal, riid, pUnk, dwDestContext,
-                                        pvDestContext, mshlFlags,
-                                        &objref.u_objref.u_custom.size);
-        if (hr != S_OK)
-        {
-            ERR("Failed to get max size of marshal data, error 0x%08x\n", hr);
-            goto cleanup;
-        }
-        /* write constant sized common header and OR_CUSTOM data into stream */
-        hr = IStream_Write(pStream, &objref,
-                          FIELD_OFFSET(OBJREF, u_objref.u_custom.pData), NULL);
-        if (hr != S_OK)
-        {
-            ERR("Failed to write OR_CUSTOM header to stream with 0x%08x\n", hr);
-            goto cleanup;
-        }
-    }
-
-    TRACE("Calling IMarshal::MarshalInterface\n");
-    /* call helper object to do the actual marshaling */
-    hr = IMarshal_MarshalInterface(pMarshal, pStream, riid, pUnk, dwDestContext,
-                                   pvDestContext, mshlFlags);
-
-    if (hr != S_OK)
-    {
-        ERR("Failed to marshal the interface %s, %x\n", debugstr_guid(riid), hr);
-        goto cleanup;
-    }
-
-cleanup:
-    IMarshal_Release(pMarshal);
-
-    TRACE("completed with hr 0x%08x\n", hr);
-    
-    return hr;
-}
-
 /***********************************************************************
  *		CoUnmarshalInterface	[OLE32.@]
  *
diff --git a/dlls/ole32/ole32.spec b/dlls/ole32/ole32.spec
index 772599b4cff..7ab90e7b7a7 100644
--- a/dlls/ole32/ole32.spec
+++ b/dlls/ole32/ole32.spec
@@ -59,7 +59,7 @@
 @ stdcall CoLockObjectExternal(ptr long long)
 @ stdcall CoMarshalHresult(ptr long) combase.CoMarshalHresult
 @ stdcall CoMarshalInterThreadInterfaceInStream(ptr ptr ptr) combase.CoMarshalInterThreadInterfaceInStream
-@ stdcall CoMarshalInterface(ptr ptr ptr long ptr long)
+@ stdcall CoMarshalInterface(ptr ptr ptr long ptr long) combase.CoMarshalInterface
 @ stub CoQueryAuthenticationServices
 @ stdcall CoQueryClientBlanket(ptr ptr ptr ptr ptr ptr ptr) combase.CoQueryClientBlanket
 @ stdcall CoQueryProxyBlanket(ptr ptr ptr ptr ptr ptr ptr ptr) combase.CoQueryProxyBlanket