diff --git a/Development.md b/Development.md
index e450631..da7b8af 100644
--- a/Development.md
+++ b/Development.md
@@ -7,7 +7,7 @@ cd spiri-project/
 git submodule add -b cti-jetpack-4.4.1  https://git.spirirobotics.com/dchvs/Jetpack.git  source/Jetpack
 (git config --file=.gitmodules submodule.source/Jetpack.branch cti-jetpack-4.4.1)
 
-git submodule add -f -b jetpack-4.4.1  https://git.spirirobotics.com/dchvs/li-mt9m021.git   source/drivers/li-mt9m021
+git submodule add -b jetpack-4.4.1  https://git.spirirobotics.com/dchvs/li-mt9m021.git   source/drivers/li-mt9m021
 git submodule add  -b 4.4.1/feature/install-script-on-level2-directory  https://git.spirirobotics.com/dchvs/CTI-L4T.git
 git submodule add  -b 4.4.1/feature/install-script-on-level2-directory  https://git.spirirobotics.com/dchvs/CTI-L4T.git CTI-L4T
 ```