diff --git a/contrib/jenkins.sh b/contrib/jenkins.sh
index f1019e4..88eda80 100755
--- a/contrib/jenkins.sh
+++ b/contrib/jenkins.sh
@@ -1,4 +1,10 @@
 #!/bin/sh
+# jenkins build helper script for libosmo-abis.  This is how we build on jenkins.osmocom.org
+
+if ! [ -x "$(command -v osmo-build-dep.sh)" ]; then
+	echo "Error: We need to have scripts/osmo-deps.sh from http://git.osmocom.org/osmo-ci/ in PATH !"
+	exit 2
+fi
 
 set -ex