diff --git a/dll/win32/shlwapi/istream.c b/dll/win32/shlwapi/istream.c
index 946d2c84b6e..e773599c45f 100644
--- a/dll/win32/shlwapi/istream.c
+++ b/dll/win32/shlwapi/istream.c
@@ -298,7 +298,7 @@ static HRESULT WINAPI IStream_fnStat(IStream *iface, STATSTG* lpStat,
 
     TRACE("(%p,%p,%d)\n", This, lpStat, grfStatFlag);
 
-    if (!grfStatFlag)
+    if (!lpStat)
         return STG_E_INVALIDPOINTER;
 
     memset(&fi, 0, sizeof(fi));