diff --git a/testing/docker/prepare.sh b/testing/docker/prepare.sh
index c8ed22b..74ecd31 100755
--- a/testing/docker/prepare.sh
+++ b/testing/docker/prepare.sh
@@ -1,4 +1,9 @@
 #!/bin/bash
+cd "${0%/*}"
+if [[ ! -e run-all-tests.sh ]] ; then
+	echo "Error, this script must run from the ./testing/docker directory"
+	exit 1
+fi
 
 echo "Checking docker"
 docker ps
diff --git a/testing/docker/run-all-tests.sh b/testing/docker/run-all-tests.sh
index 30d2deb..466116f 100755
--- a/testing/docker/run-all-tests.sh
+++ b/testing/docker/run-all-tests.sh
@@ -1,6 +1,11 @@
 #!/bin/bash
 
 # This script runs the testscript for all supported docker images
+cd "${0%/*}"
+if [[ ! -e run-all-tests.sh ]] ; then
+	echo "Error, this script must run from the ./testing/docker directory"
+	exit 1
+fi
 
 TARGET=../../build-docker
 mkdir -p $TARGET