diff --git a/dlls/shlwapi/ordinal.c b/dlls/shlwapi/ordinal.c
index f127ca1..223e4a8 100644
--- a/dlls/shlwapi/ordinal.c
+++ b/dlls/shlwapi/ordinal.c
@@ -4728,3 +4728,27 @@
     FIXME("(%s, %p, %p, %i) STUB\n",verb, pUnknown, pUnknown2, dwUnknown3);
     return 0;
 }
+
+/*************************************************************************
+ *      @	[SHLWAPI.538]
+ *
+ *  Undocumented:  Implementation guessed at via Name and behavior
+ *
+ * PARAMS
+ *  lpUnknown [I] Object to get an IServiceProvider interface from
+ *  riid      [I] Function requested for QueryService call
+ *  lppOut    [O] Destination for the service interface pointer
+ *
+ * RETURNS
+ *  Success: S_OK. lppOut contains an object providing the requested service
+ *  Failure: An HRESULT error code
+ *
+ * NOTES
+ *  lpUnknown is expected to support the IServiceProvider interface.
+ */
+HRESULT WINAPI IUnknown_QueryServiceForWebBrowserApp(IUnknown* lpUnknown,
+        REFGUID riid, LPVOID *lppOut)
+{
+    FIXME("%p %s %p semi-STUB\n", lpUnknown, debugstr_guid(riid), lppOut);
+    return IUnknown_QueryService(lpUnknown,&IID_IWebBrowserApp,riid,lppOut);
+}
diff --git a/dlls/shlwapi/shlwapi.spec b/dlls/shlwapi/shlwapi.spec
index c877dd1..3a962eb 100644
--- a/dlls/shlwapi/shlwapi.spec
+++ b/dlls/shlwapi/shlwapi.spec
@@ -531,7 +531,7 @@
 535 stub -noname SHPropertyBag_Delete
 536 stub -noname IUnknown_QueryServicePropertyBag
 537 stub -noname SHBoolSystemParametersInfo
-538 stub -noname IUnknown_QueryServiceForWebBrowserApp
+538 stdcall -noname IUnknown_QueryServiceForWebBrowserApp(ptr ptr ptr)
 539 stub -noname IUnknown_ShowBrowserBar
 540 stub -noname SHInvokeCommandOnContextMenu
 541 stub -noname SHInvokeCommandsOnContextMen