diff --git a/sources/tech/20120204 Computer Laboratory - Raspberry Pi- Lesson 4 OK04.md b/sources/tech/20120204 Computer Laboratory - Raspberry Pi- Lesson 4 OK04.md
index 00fe349914..ae96b8d5cf 100644
--- a/sources/tech/20120204 Computer Laboratory - Raspberry Pi- Lesson 4 OK04.md	
+++ b/sources/tech/20120204 Computer Laboratory - Raspberry Pi- Lesson 4 OK04.md	
@@ -1,5 +1,5 @@
 [#]: collector: (lujun9972)
-[#]: translator: ( )
+[#]: translator: (qhwdw)
 [#]: reviewer: ( )
 [#]: publisher: ( )
 [#]: url: ( )