diff --git a/.gitmodules b/.gitmodules
index 7cd8281fa1..9ec1f5dce5 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,7 +1,7 @@
 [submodule "lib/chibios"]
 	path = lib/chibios
 	url = https://github.com/Keychron/ChibiOS.git
-	branch = master
+	branch = fix_STM32F401
 [submodule "lib/chibios-contrib"]
 	path = lib/chibios-contrib
 	url = https://github.com/qmk/ChibiOS-Contrib