diff --git a/doc/doc-test.txt b/doc/doc-test.txt
index bd6582a..7046585 100644
--- a/doc/doc-test.txt
+++ b/doc/doc-test.txt
@@ -1,2 +1,2 @@
 this is a testing file in doc folder.
-in yuan-branch
\ No newline at end of file
+in main branch
\ No newline at end of file