diff --git a/renew-certificates.sh b/renew-certificates.sh
index b789116..c8f8eb2 100755
--- a/renew-certificates.sh
+++ b/renew-certificates.sh
@@ -1,5 +1,8 @@
 #!/bin/bash
 
+parent_path=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )
+cd $parent_path
+
 source variables.env
 
 CB=`docker ps | grep certbot | cut -d ' ' -f 1`