diff --git a/DownKyi.Core/Storage/Database/CoverDb.cs b/DownKyi.Core/Storage/Database/CoverDb.cs
index 1c5ecfa..9576116 100644
--- a/DownKyi.Core/Storage/Database/CoverDb.cs
+++ b/DownKyi.Core/Storage/Database/CoverDb.cs
@@ -7,9 +7,14 @@ namespace DownKyi.Core.Storage.Database
     public class CoverDb
     {
         private const string key = "b5018ecc-09d1-4da2-aa49-4625e41e623e";
-        private readonly DbHelper dbHelper = new DbHelper(StorageManager.GetCoverIndex(), key);
         private readonly string tableName = "cover";
 
+#if DEBUG
+        private readonly DbHelper dbHelper = new DbHelper(StorageManager.GetCoverIndex().Replace(".db", "_debug.db"));
+#else
+        private readonly DbHelper dbHelper = new DbHelper(StorageManager.GetCoverIndex(), key);
+#endif
+
         public CoverDb()
         {
             CreateTable();
diff --git a/DownKyi.Core/Storage/Database/HeaderDb.cs b/DownKyi.Core/Storage/Database/HeaderDb.cs
index 325e4a2..28f9a48 100644
--- a/DownKyi.Core/Storage/Database/HeaderDb.cs
+++ b/DownKyi.Core/Storage/Database/HeaderDb.cs
@@ -7,9 +7,14 @@ namespace DownKyi.Core.Storage.Database
     public class HeaderDb
     {
         private const string key = "7c1f1f40-7cdf-4d11-ad28-f0137a3c5308";
-        private readonly DbHelper dbHelper = new DbHelper(StorageManager.GetHeaderIndex(), key);
         private readonly string tableName = "header";
 
+#if DEBUG
+        private readonly DbHelper dbHelper = new DbHelper(StorageManager.GetHeaderIndex().Replace(".db", "_debug.db"));
+#else
+        private readonly DbHelper dbHelper = new DbHelper(StorageManager.GetHeaderIndex(), key);
+#endif
+
         public HeaderDb()
         {
             CreateTable();