diff --git a/Tools/check_submodules.sh b/Tools/check_submodules.sh
index abe3088c7f..8fd9a8f003 100755
--- a/Tools/check_submodules.sh
+++ b/Tools/check_submodules.sh
@@ -46,14 +46,22 @@ else
 fi
 
 
-if [ -d uavcan/libuavcan_drivers ];
+if [ -d uavcan ]
 then
-	STATUSRETVAL=$(git status --porcelain | grep -i uavcan)
-	if [ "$STATUSRETVAL" == "" ]; then
+	STATUSRETVAL=$(git submodule summary | grep -A20 -i uavcan | grep "<")
+	if [ -z "$STATUSRETVAL" ]
+	then
 		echo "Checked uavcan submodule, correct version found"
 	else
-		echo "uavcan sub repo not at correct version. Try 'make updatesubmodules'"
+		echo ""
+		echo ""
+		echo "uavcan sub repo not at correct version. Try 'git submodule update'"
 		echo "or follow instructions on http://pixhawk.org/dev/git/submodules"
+		echo ""
+		echo ""
+		echo "New commits required:"
+		echo "$(git submodule summary)"
+		echo ""
 		exit 1
 	fi
 else