diff --git a/bkctld b/bkctld
index aed29ad..f9cadd5 100755
--- a/bkctld
+++ b/bkctld
@@ -41,21 +41,17 @@ check_jail() {
 
 check_jail_on() {
 	jail=$1
-        if [ -f ${JAILDIR}/${jail}/${SSHD_PID} ]; then
-                pid=$(cat ${JAILDIR}/${jail}/${SSHD_PID})
-                ps -p $pid > /dev/null
-                if [ $? -eq 0 ]; then
-                        exit 0
-                else
-			rm ${JAILDIR}/${jail}/${SSHD_PID}
-	                umount --lazy --recursive ${JAILDIR}/${jail}/dev
-			umount --lazy ${JAILDIR}/${jail}/proc/
-			exit 1
-		fi
-        else
-		exit 1
+	return=1
+	if [ -f ${JAILDIR}/${jail}/${SSHD_PID} ]; then
+	        pid=$(cat ${JAILDIR}/${jail}/${SSHD_PID})
+	        ps -p $pid > /dev/null && return=0
 	fi
-	echo $status
+	if [ "$return" -eq 1 ]; then
+		rm -f ${JAILDIR}/${jail}/${SSHD_PID}
+		grep -q "${JAILDIR}/${jail}/proc" /proc/mounts && umount --lazy ${JAILDIR}/${jail}/proc/
+	        grep -q "${JAILDIR}/${jail}/dev" /proc/mounts && umount --lazy --recursive ${JAILDIR}/${jail}/dev
+	fi
+	exit "$return"
 }
 
 ## get functions : get info on jail