diff --git a/src/Nest/Core/NestDatabase.ts b/src/Nest/Core/NestDatabase.ts
index 089670e83..6607723db 100644
--- a/src/Nest/Core/NestDatabase.ts
+++ b/src/Nest/Core/NestDatabase.ts
@@ -78,7 +78,7 @@ export class NestDatabase
         file.Write(this.Bin.Id);
 
         file.Write(this.PreParts.length);
-        for (let part of this.Parts)
+        for (let part of this.PreParts)
             part.WriteFile(file);
 
         file.Write(this.Parts.length);