diff --git a/include/pstore.idl b/include/pstore.idl
index 4f9623ec4e8..a963b251347 100644
--- a/include/pstore.idl
+++ b/include/pstore.idl
@@ -255,7 +255,7 @@ interface IPStore : IUnknown
         [in] const GUID* pItemSubtype,
         [in] LPCWSTR szItemName,
         [in] PST_ACCESSMODE ModeFlags,
-        [in] PPST_PROMPTINFO pProomptInfo,
+        [in] PPST_PROMPTINFO pPromptInfo,
         [in] DWORD dwFlags );
 
     HRESULT CloseItem(