diff --git a/Tools/check_submodules.sh b/Tools/check_submodules.sh
index 430c2270f1..cac39664ee 100755
--- a/Tools/check_submodules.sh
+++ b/Tools/check_submodules.sh
@@ -6,6 +6,13 @@
     exit 0
 }
 
+if [ -f src/modules/uavcan/libuavcan/CMakeLists.txt ]
+then
+	echo "Git submodule config valid."
+else
+	git submodule update --init --recursive
+fi
+
 GITSTATUS=$(git status)
 
 function check_git_submodule {