diff --git a/octorech.lco b/octorech.lco
deleted file mode 100644
index cd40ac8..0000000
--- a/octorech.lco
+++ /dev/null
@@ -1,9 +0,0 @@
-\setkomavar{fromname}{OctoPi.Consulting}
-\setkomavar{fromaddress}{Zitzmannstr.\,15\\07743 Jena}
-\setkomavar{frommobilephone}[\faMobilePhone~]{01\,63 / 615 61 98}
-\setkomavar{fromurl}{https://octopi.consulting/}
-\setkomavar{fromemail}[\faEnvelopeO~]{rechnung@octopi.consulting}
-\setkomavar{place}{Jena}
-\setkomavar{placeseparator}{, }
-\setkomavar{signature}{Jens Kubieziel}
-\setkomavar{frombank}{Commerzbank AG Jena}
diff --git a/rechnung.sh b/rechnung.sh
index 2db7ea3..f1754d0 100755
--- a/rechnung.sh
+++ b/rechnung.sh
@@ -10,6 +10,16 @@
 set -u
 set -e
 
+# ein paar Sicherheitsvorkehrungen
+# --------------------------------
+
+unset -f command
+unset -f unalias
+\unalias -a
+OLDPATH=$PATH
+PATH=/bin:/usr/bin
+export PATH
+
 # Benötigte Programme
 # -------------------
 
@@ -309,7 +319,6 @@ set_value() {
     
     trim_key "$key"
     trim_value "$value"
-    print_info "Set $key to $value"
     case $KEY_BUFFER in
         kunde) KUNDE="$VALUE_BUFFER";;
         adresse) ADRESSE="$VALUE_BUFFER";;
@@ -405,7 +414,7 @@ proced_ini_line() {
 
 display_help() (
 
-    echo "Usage: rechnung.sh [-f rechnungsfile] [-h] [-l lco-file]"
+    echo "Usage: $PROGRAMM_NAME [-f rechnungsfile] [-h] [-l lco-file]"
 )
 
 quit() {