diff --git a/lock b/lock
index a050e64..0b87ab0 100755
--- a/lock
+++ b/lock
@@ -1,5 +1,5 @@
 #!/bin/sh
-source shared
+. $(dirname $(readlink "$0"))/shared
 
 echo "Initializing Space Systems..."
 echo "22" > /sys/class/gpio/unexport
diff --git a/shared b/shared
index 449bc67..4faa2f3 100755
--- a/shared
+++ b/shared
@@ -1,13 +1,14 @@
 #!/bin/sh
+basedir=$(dirname $(readlink "$0"))
 config="dooris.conf"
 
 # warn if local config file is missing
-if [ ! -f "${config}" ]; then
+if [ ! -f "${basedir}/${config}" ]; then
 	echo "WARNING: ${config} is missing!" >&2
 fi
 
 # get password config value in a safe way
-password="$(grep password ${config} 2>/dev/null|cut -d= -f2|tr -d ' \t')"
+password="$(grep password ${basedir}/${config} 2>/dev/null|cut -d= -f2|tr -d ' \t')"
 if [ -z "${password}" ]; then
 	echo "WARNING: password in ${config} is missing!" >&2
 fi
diff --git a/unlock b/unlock
index 19f1eae..b7048fb 100755
--- a/unlock
+++ b/unlock
@@ -1,5 +1,5 @@
 #!/bin/sh
-source shared
+. $(dirname $(readlink "$0"))/shared
 
 echo "Initializing Space Systems..."
 echo "27" > /sys/class/gpio/unexport