diff --git a/Plugins/Wox.Plugin.Program/ProgramSource.cs b/Plugins/Wox.Plugin.Program/ProgramSource.cs
index 9d944550b3..1345c51f4a 100644
--- a/Plugins/Wox.Plugin.Program/ProgramSource.cs
+++ b/Plugins/Wox.Plugin.Program/ProgramSource.cs
@@ -10,7 +10,8 @@ namespace Wox.Plugin.Program
         public string Type { get; set; }
         public int BonusPoints { get; set; }
         public bool Enabled { get; set; }
-        public string[] Suffixes { get; set; }
+        // happlebao todo: temp hack for program suffixes
+        public string[] Suffixes { get; set; } = {"bat", "appref-ms", "exe", "lnk"};
         public const char SuffixSeperator = ';';
         public int MaxDepth { get; set; }
         public Dictionary<string, string> Meta { get; set; }
diff --git a/Plugins/Wox.Plugin.Program/Programs.cs b/Plugins/Wox.Plugin.Program/Programs.cs
index 09fa80b5da..d98c1a248b 100644
--- a/Plugins/Wox.Plugin.Program/Programs.cs
+++ b/Plugins/Wox.Plugin.Program/Programs.cs
@@ -107,8 +107,6 @@ namespace Wox.Plugin.Program
                 {
                     sources.AddRange(_settings.ProgramSources);
                 }
-                // happlebao todo: temp hack for program suffixes
-                sources.AsParallel().ForAll(s => { s.Suffixes = _settings.ProgramSuffixes; });
 
                 _sources = sources.AsParallel()
                                   .Where(s => s.Enabled && SourceTypes.ContainsKey(s.Type))
diff --git a/Plugins/Wox.Plugin.Program/SuffixesConverter.cs b/Plugins/Wox.Plugin.Program/SuffixesConverter.cs
index 11d76e5b31..5db4ec945f 100644
--- a/Plugins/Wox.Plugin.Program/SuffixesConverter.cs
+++ b/Plugins/Wox.Plugin.Program/SuffixesConverter.cs
@@ -12,7 +12,7 @@ namespace Wox.Plugin.Program
             var text = value as string[];
             if (text != null)
             {
-                return string.Join("", text);
+                return string.Join(";", text);
             }
             else
             {