diff --git a/dlls/pstorec/pstorec.c b/dlls/pstorec/pstorec.c
index 6e2b5a59c2b..debb222797a 100644
--- a/dlls/pstorec/pstorec.c
+++ b/dlls/pstorec/pstorec.c
@@ -264,7 +264,7 @@ static HRESULT WINAPI PStore_fnDeleteItem( IPStore* This, PST_KEY Key,
  */
 static HRESULT WINAPI PStore_fnReadItem( IPStore* This, PST_KEY Key,
     const GUID* pItemType, const GUID* pItemSubtype, LPCWSTR szItemName,
-    DWORD *cbData, BYTE** pbData, PPST_PROMPTIFO pPromptInfo, DWORD dwFlags)
+    DWORD *cbData, BYTE** pbData, PPST_PROMPTINFO pPromptInfo, DWORD dwFlags)
 {
     FIXME("%p %08x %s %s %s %p %p %p %08x\n", This, Key,
           debugstr_guid(pItemType), debugstr_guid(pItemSubtype),
@@ -277,7 +277,7 @@ static HRESULT WINAPI PStore_fnReadItem( IPStore* This, PST_KEY Key,
  */
 static HRESULT WINAPI PStore_fnWriteItem( IPStore* This, PST_KEY Key,
     const GUID* pItemType, const GUID* pItemSubtype, LPCWSTR szItemName,
-    DWORD cbData, BYTE* ppbData, PPST_PROMPTIFO pPromptInfo,
+    DWORD cbData, BYTE* ppbData, PPST_PROMPTINFO pPromptInfo,
     DWORD dwDefaultConfirmationStyle, DWORD dwFlags)
 {
     FIXME("%p %08x %s %s %s %d %p %p %08x\n", This, Key,
@@ -291,7 +291,7 @@ static HRESULT WINAPI PStore_fnWriteItem( IPStore* This, PST_KEY Key,
  */
 static HRESULT WINAPI PStore_fnOpenItem( IPStore* This, PST_KEY Key,
     const GUID* pItemType, const GUID* pItemSubtype, LPCWSTR szItemName,
-    PST_ACCESSMODE ModeFlags, PPST_PROMPTIFO pProomptInfo, DWORD dwFlags )
+    PST_ACCESSMODE ModeFlags, PPST_PROMPTINFO pProomptInfo, DWORD dwFlags )
 {
     FIXME("%p %08x %s %s %p %08x %p %08x\n", This, Key,
            debugstr_guid(pItemType), debugstr_guid(pItemSubtype),
diff --git a/include/pstore.idl b/include/pstore.idl
index 06f5132a5c5..ee184d4503f 100644
--- a/include/pstore.idl
+++ b/include/pstore.idl
@@ -42,9 +42,13 @@ typedef struct _PST_PROVIDERINFO
     LPWSTR szProviderName;
 } PST_PROVIDERINFO, *PPST_PROVIDERINFO;
 
-typedef void *PPST_PROMPTIFO;
-
-
+typedef struct _PST_PROMPTINFO
+{
+    DWORD cbSize;
+    DWORD dwPromptFlags;
+    HWND hwndApp;
+    LPCWSTR szPrompt;
+} PST_PROMPTINFO, *PPST_PROMPTINFO;
 
 typedef struct {
     DWORD cbSize;
@@ -71,13 +75,6 @@ typedef struct {
     LPWSTR szDisplayName;
 } PST_TYPEINFO, *PPST_TYPEINFO;
 
-typedef struct {
-    DWORD cbSize;
-    DWORD dwPromptFlags;
-    DWORD_PTR  hwndApp;
-    LPCWSTR szPrompt;
-} PST_PROMPTINFO, *PPST_PROMPTINFO;
-
 [
   object,
   pointer_default(unique)
@@ -222,7 +219,7 @@ interface IPStore : IUnknown
         [in] LPCWSTR szItemName,
         [in] DWORD *cbData,
         [in] BYTE** pbData,
-        [in] PPST_PROMPTIFO pPromptInfo,
+        [in] PPST_PROMPTINFO pPromptInfo,
         [in] DWORD dwFlags );
 
     HRESULT WriteItem(
@@ -232,7 +229,7 @@ interface IPStore : IUnknown
         [in] LPCWSTR szItemName,
         [in] DWORD cbData,
         [in,size_is(cbData)] BYTE *ppbData,
-        [in] PPST_PROMPTIFO pPromptInfo,
+        [in] PPST_PROMPTINFO pPromptInfo,
         [in] DWORD dwDefaultConfirmationStyle,
         [in] DWORD dwFlags);
 
@@ -242,7 +239,7 @@ interface IPStore : IUnknown
         [in] const GUID* pItemSubtype,
         [in] LPCWSTR szItemName,
         [in] PST_ACCESSMODE ModeFlags,
-        [in] PPST_PROMPTIFO pProomptInfo,
+        [in] PPST_PROMPTINFO pProomptInfo,
         [in] DWORD dwFlags );
 
     HRESULT CloseItem(