diff --git a/src/backend/gdi.c b/src/backend/gdi.c
index 4ab2d9e..dbd87ac 100644
--- a/src/backend/gdi.c
+++ b/src/backend/gdi.c
@@ -24,14 +24,14 @@ static struct symtbl {
 	HRESULT(WINAPI* OleInitialize)(LPVOID pvReserved);
 	HRESULT(WINAPI* RegisterDragDrop)(HWND hwnd, LPDROPTARGET pDropTarget);
 	HRESULT(WINAPI* FindMimeFromData)(
-	    LPBC	     pBC,
-	    LPCWSTR	     pwzUrl,
-	    LPVOID	     pBuffer,
-	    DWORD	     cbSize,
-	    LPCWSTR	     pwzMimeProposed,
-	    DWORD	     dwMimeFlags,
-	    LPWSTR*	     ppwzMimeOut,
-	    _Reserved_ DWORD dwReserved);
+	    LPBC    pBC,
+	    LPCWSTR pwzUrl,
+	    LPVOID  pBuffer,
+	    DWORD   cbSize,
+	    LPCWSTR pwzMimeProposed,
+	    DWORD   dwMimeFlags,
+	    LPWSTR* ppwzMimeOut,
+	    DWORD   dwReserved);
 } wsymtbl;
 
 static int is_plgblt_reliable = 0;