diff --git a/Plugins/Wox.Plugin.Program/FileChangeWatcher.cs b/Plugins/Wox.Plugin.Program/FileChangeWatcher.cs
index a493365b0d..559a06518d 100644
--- a/Plugins/Wox.Plugin.Program/FileChangeWatcher.cs
+++ b/Plugins/Wox.Plugin.Program/FileChangeWatcher.cs
@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.IO;
 using System.Threading;
 using Wox.Infrastructure;
@@ -15,7 +16,7 @@ namespace Wox.Plugin.Program
             if (watchedPath.Contains(path)) return;
             if (!Directory.Exists(path))
             {
-                DebugHelper.WriteLine(string.Format("FileChangeWatcher: {0} doesn't exist", path));
+                Debug.WriteLine(string.Format("FileChangeWatcher: {0} doesn't exist", path));
                 return;
             }
 
diff --git a/Plugins/Wox.Plugin.Program/Programs.cs b/Plugins/Wox.Plugin.Program/Programs.cs
index 1b1ee94485..87b2aeeeed 100644
--- a/Plugins/Wox.Plugin.Program/Programs.cs
+++ b/Plugins/Wox.Plugin.Program/Programs.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.IO;
 using System.Linq;
 using System.Reflection;
@@ -74,7 +75,7 @@ namespace Wox.Plugin.Program
             {
                 programs = ProgramCacheStorage.Instance.Programs;
             }
-            DebugHelper.WriteLine(string.Format("Preload {0} programs from cache", programs.Count));
+            Debug.WriteLine(string.Format("Preload {0} programs from cache", programs.Count));
             using (new Timeit("Program Index"))
             {
                 IndexPrograms();
diff --git a/Wox.Core/Plugin/PluginManager.cs b/Wox.Core/Plugin/PluginManager.cs
index a8a9ddf463..cd5a0ca20f 100644
--- a/Wox.Core/Plugin/PluginManager.cs
+++ b/Wox.Core/Plugin/PluginManager.cs
@@ -99,7 +99,7 @@ namespace Wox.Core.Plugin
                         API = API
                     });
                     sw.Stop();
-                    DebugHelper.WriteLine(string.Format("Plugin init:{0} - {1}", pair.Metadata.Name, sw.ElapsedMilliseconds));
+                    Debug.WriteLine(string.Format("Plugin init:{0} - {1}", pair.Metadata.Name, sw.ElapsedMilliseconds));
                     pair.InitTime = sw.ElapsedMilliseconds;
                     InternationalizationManager.Instance.UpdatePluginMetadataTranslations(pair);
                 });
@@ -196,7 +196,7 @@ namespace Wox.Core.Plugin
                     o.PluginID = pair.Metadata.ID;
                 });
                 sw.Stop();
-                DebugHelper.WriteLine(string.Format("Plugin query: {0} - {1}", pair.Metadata.Name, sw.ElapsedMilliseconds));
+                Debug.WriteLine(string.Format("Plugin query: {0} - {1}", pair.Metadata.Name, sw.ElapsedMilliseconds));
                 pair.QueryCount += 1;
                 if (pair.QueryCount == 1)
                 {
diff --git a/Wox.Core/Plugin/QueryDispatcher/BaseQueryDispatcher.cs b/Wox.Core/Plugin/QueryDispatcher/BaseQueryDispatcher.cs
index 35bf8bbac2..aeb886536a 100644
--- a/Wox.Core/Plugin/QueryDispatcher/BaseQueryDispatcher.cs
+++ b/Wox.Core/Plugin/QueryDispatcher/BaseQueryDispatcher.cs
@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
 using System.Threading;
 using Wox.Core.UserSettings;
@@ -24,7 +25,7 @@ namespace Wox.Core.Plugin.QueryDispatcher
                 PluginPair localPair = pair;
                 if (query.IsIntantQuery && PluginManager.IsInstantSearchPlugin(pair.Metadata))
                 {
-                    DebugHelper.WriteLine(string.Format("Plugin {0} is executing instant search.", pair.Metadata.Name));
+                    Debug.WriteLine(string.Format("Plugin {0} is executing instant search.", pair.Metadata.Name));
                     using (new Timeit("  => instant search took: "))
                     {
                         PluginManager.ExecutePluginQuery(localPair, query);
diff --git a/Wox.Infrastructure/DebugHelper.cs b/Wox.Infrastructure/DebugHelper.cs
deleted file mode 100644
index 447071abf1..0000000000
--- a/Wox.Infrastructure/DebugHelper.cs
+++ /dev/null
@@ -1,13 +0,0 @@
-using System.Diagnostics;
-
-namespace Wox.Infrastructure
-{
-    public static class DebugHelper
-    {
-        public static void WriteLine(string msg)
-        {
-            return;
-            Debug.WriteLine(msg);
-        }
-    }
-}
diff --git a/Wox.Infrastructure/Timeit.cs b/Wox.Infrastructure/Timeit.cs
index 89a8dbbddc..7a857bee4b 100644
--- a/Wox.Infrastructure/Timeit.cs
+++ b/Wox.Infrastructure/Timeit.cs
@@ -17,7 +17,7 @@ namespace Wox.Infrastructure
         public void Dispose()
         {
             stopwatch.Stop();
-            DebugHelper.WriteLine(name + ":" + stopwatch.ElapsedMilliseconds + "ms");
+            Debug.WriteLine(name + ":" + stopwatch.ElapsedMilliseconds + "ms");
         }
     }
 }
diff --git a/Wox.Infrastructure/Wox.Infrastructure.csproj b/Wox.Infrastructure/Wox.Infrastructure.csproj
index 7d5db6eeb5..3c10409c02 100644
--- a/Wox.Infrastructure/Wox.Infrastructure.csproj
+++ b/Wox.Infrastructure/Wox.Infrastructure.csproj
@@ -49,7 +49,6 @@
     <Reference Include="WindowsBase" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="DebugHelper.cs" />
     <Compile Include="Hotkey\InterceptKeys.cs" />
     <Compile Include="Hotkey\KeyEvent.cs" />
     <Compile Include="Logger\Log.cs" />
diff --git a/Wox/ImageLoader/ImageLoader.cs b/Wox/ImageLoader/ImageLoader.cs
index 8fa9f9c5d8..62924c1710 100644
--- a/Wox/ImageLoader/ImageLoader.cs
+++ b/Wox/ImageLoader/ImageLoader.cs
@@ -122,7 +122,7 @@ namespace Wox.ImageLoader
             }
 
             sw.Stop();
-            DebugHelper.WriteLine(string.Format("Loading image path: {0} - {1}ms",path,sw.ElapsedMilliseconds));
+            Debug.WriteLine(string.Format("Loading image path: {0} - {1}ms",path,sw.ElapsedMilliseconds));
             return img;
         }
 
diff --git a/Wox/MainWindow.xaml.cs b/Wox/MainWindow.xaml.cs
index bfb09795c7..f87277bbbe 100644
--- a/Wox/MainWindow.xaml.cs
+++ b/Wox/MainWindow.xaml.cs
@@ -491,11 +491,11 @@ namespace Wox
         {
             if (!string.IsNullOrEmpty(query) && PluginManager.IsInstantQuery(query))
             {
-                DebugHelper.WriteLine("execute query without delay");
+                Debug.WriteLine("execute query without delay");
                 return 0;
             }
 
-            DebugHelper.WriteLine("execute query with 200ms delay");
+            Debug.WriteLine("execute query with 200ms delay");
             return 200;
         }