diff --git a/github/check.self-service-password.update b/github/check.self-service-password.update
index 4ee31b3..150e267 100755
--- a/github/check.self-service-password.update
+++ b/github/check.self-service-password.update
@@ -42,15 +42,22 @@ fi
 # }}}
 
 # Vars {{{
-DEBUG=0
+DEBUG=1
 
 script_wd=$(dirname "${0}")
 
-ssp_install_dir="${1}"
-ssp_current_version=$(cd "${ssp_install_dir}" || exit 1 ; git status | head -n1 | cut -d" " -f4 | sed 's/v//g' ; cd - > /dev/null || exit 1)
-
 ssp_repo_url="https://github.com/ltb-project/self-service-password"
-ssp_new_version=$("${script_wd}"/releasetags "${ssp_repo_url}" | head -n1 | sed 's/v//g')
+if [ $# -eq 1 ]  ## If source directory should be used
+then
+	ssp_install_dir="${1}"
+	ssp_current_version=$(cd "${ssp_install_dir}" || exit 1 ; git status | head -n1 | cut -d" " -f4 ; cd - > /dev/null || exit 1)
+
+	ssp_new_version=$("${script_wd}"/releasetags "${ssp_repo_url}" | head -n1)
+else  ## If .deb file should be used
+	ssp_current_version=$(dpkg -l self-service-password | awk '/^ii.*self-service-password/ { print $3}' | sed 's/\(.*\)-.*/\1/')
+
+	ssp_new_version=$("${script_wd}"/releasetags "${ssp_repo_url}" | head -n1 | sed 's/v//g')
+fi
 
 ssp_new_version_file="/tmp/.github.self-service-password.upgrade"
 # }}}