diff --git a/src/modules/launcher/Plugins/Wox.Plugin.Indexer/SearchHelper/WindowsSearchAPI.cs b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/SearchHelper/WindowsSearchAPI.cs
index fb7b6ffcd1..8731155a45 100644
--- a/src/modules/launcher/Plugins/Wox.Plugin.Indexer/SearchHelper/WindowsSearchAPI.cs
+++ b/src/modules/launcher/Plugins/Wox.Plugin.Indexer/SearchHelper/WindowsSearchAPI.cs
@@ -31,8 +31,7 @@ namespace Wox.Plugin.Indexer.SearchHelper
                     {
                         while (WDSResults.Read())
                         {
-                            // col 0 is our path in display format
-                            if (WDSResults.GetString(0) != null)
+                            if (!Convert.IsDBNull(WDSResults[0]))
                             {
                                 var result = new SearchResult { Path = WDSResults.GetString(0) };
                                 yield return result;