diff --git a/.gitmodules b/.gitmodules
index d37926e..2dd3fd8 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,4 @@
 [submodule "ChibiOS"]
 	path = ChibiOS
 	url = git@github.com:edy555/ChibiOS.git
+	branch = I2SFULLDUPLEX
\ No newline at end of file