diff --git a/usr/local/share/bastille/monitor.sh b/usr/local/share/bastille/monitor.sh
index 25960735..0c691cfd 100644
--- a/usr/local/share/bastille/monitor.sh
+++ b/usr/local/share/bastille/monitor.sh
@@ -144,7 +144,7 @@ for _jail in ${JAILS}; do
             add)
 	        [ -z "${SERVICE}" ] && usage
                 for _service in $(echo "${SERVICE}" | tr , ' '); do
-                    if ! grep -qE "^${_service}\$" "${bastille_jail_monitor}" 2>/dev/null 2>&1; then
+                    if ! grep -qEs "^${_service}\$" "${bastille_jail_monitor}" 2>/dev/null 2>&1; then
                         echo "${_service}" >> "${bastille_jail_monitor}"
                         echo "$(date '+%Y-%m-%d %H:%M:%S'): Added monitor for ${_service} on ${_jail}" >> "${bastille_monitor_logfile}"
 		    fi
@@ -154,7 +154,7 @@ for _jail in ${JAILS}; do
 	        [ -z "${SERVICE}" ] && usage
                 for _service in $(echo "${SERVICE}" | tr , ' '); do
                     [ ! -f "${bastille_jail_monitor}" ] && break # skip if no monitor file
-                    if grep -qE "^${_service}\$" "${bastille_jail_monitor}" 2>/dev/null 2>&1; then
+                    if grep -qEs "^${_service}\$" "${bastille_jail_monitor}" 2>/dev/null 2>&1; then
 		        sed -i '' "/^${_service}\$/d" "${bastille_jail_monitor}"
 	                echo "$(date '+%Y-%m-%d %H:%M:%S'): Removed monitor for ${_service} on ${_jail}" >> "${bastille_monitor_logfile}"
 		    fi
@@ -168,7 +168,7 @@ for _jail in ${JAILS}; do
                         usage # Only one service per query
                     fi
                     [ ! -f "${bastille_jail_monitor}" ] && continue # skip if there is no monitor file
-                    if grep -qE "^${SERVICE}\$" "${bastille_jail_monitor}" 2>/dev/null 2>&1; then
+                    if grep -qEs "^${SERVICE}\$" "${bastille_jail_monitor}" 2>/dev/null 2>&1; then
                         echo "${_jail}"
 			continue
                     fi