diff --git a/NDOUtils_Installation.md b/NDOUtils_Installation.md
index d5052b0..b54c8c1 100644
--- a/NDOUtils_Installation.md
+++ b/NDOUtils_Installation.md
@@ -48,7 +48,7 @@ cd db/
 cd /usr/local/nagios/etc/
 mv ndo2db.cfg-sample ndo2db.cfg
 mv ndomod.cfg-sample ndomod.cfg
-ed -i 's/^db_user=.*/db_user=ndoutils/g' /usr/local/nagios/etc/ndo2db.cfg
+sed -i 's/^db_user=.*/db_user=ndoutils/g' /usr/local/nagios/etc/ndo2db.cfg
 sed -i 's/^db_user=.*/db_user=ndoutils/g' /usr/local/nagios/etc/ndo2db.cfg
 sed -i 's/^db_pass=.*/db_pass=password/g' /usr/local/nagios/etc/ndo2db.cfg