diff --git a/dlls/shell32/brsfolder.c b/dlls/shell32/brsfolder.c
index b4fdc48a318..7be1e3262bb 100644
--- a/dlls/shell32/brsfolder.c
+++ b/dlls/shell32/brsfolder.c
@@ -627,9 +627,8 @@ LPITEMIDLIST WINAPI SHBrowseForFolderA (LPBROWSEINFOA lpbi)
     bi.pidlRoot = lpbi->pidlRoot;
     if (lpbi->pszDisplayName)
     {
-        len = MultiByteToWideChar( CP_ACP, 0, lpbi->pszDisplayName, -1, NULL, 0 );
-        bi.pszDisplayName = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
-        MultiByteToWideChar( CP_ACP, 0, lpbi->pszDisplayName, -1, bi.pszDisplayName, len );
+        bi.pszDisplayName = HeapAlloc( GetProcessHeap(), 0, MAX_PATH * sizeof(WCHAR) );
+        MultiByteToWideChar( CP_ACP, 0, lpbi->pszDisplayName, -1, bi.pszDisplayName, MAX_PATH );
     }
     else
         bi.pszDisplayName = NULL;