diff --git a/package/base-files/files/etc/init.d/boot b/package/base-files/files/etc/init.d/boot
index ffcc9f7adf..8b5455d8bc 100755
--- a/package/base-files/files/etc/init.d/boot
+++ b/package/base-files/files/etc/init.d/boot
@@ -50,7 +50,7 @@ boot() {
 	touch /var/log/lastlog
 	touch /tmp/resolv.conf.auto
 	ln -sf /tmp/resolv.conf.auto /tmp/resolv.conf
-	grep -q debugfs /proc/filesystems && mount -o noatime -t debugfs debugfs /sys/kernel/debug
+	grep -q debugfs /proc/filesystems && /bin/mount -o noatime -t debugfs debugfs /sys/kernel/debug
 	[ "$FAILSAFE" = "true" ] && touch /tmp/.failsafe
 
 	/sbin/kmodloader
diff --git a/package/base-files/files/etc/init.d/umount b/package/base-files/files/etc/init.d/umount
index 13ac61a812..349b2b3264 100755
--- a/package/base-files/files/etc/init.d/umount
+++ b/package/base-files/files/etc/init.d/umount
@@ -4,5 +4,5 @@
 STOP=99
 stop() {
 	sync
-	umount -a -d -r
+	/bin/umount -a -d -r
 }
diff --git a/package/base-files/files/lib/functions.sh b/package/base-files/files/lib/functions.sh
index 6f23e0b8b2..e7ca02a655 100755
--- a/package/base-files/files/lib/functions.sh
+++ b/package/base-files/files/lib/functions.sh
@@ -568,12 +568,12 @@ dupe() { # <new_root> <old_root>
 }
 
 pivot() { # <new_root> <old_root>
-	mount -o noatime,move /proc $1/proc && \
+	/bin/mount -o noatime,move /proc $1/proc && \
 	pivot_root $1 $1$2 && {
-		mount -o noatime,move $2/dev /dev
-		mount -o noatime,move $2/tmp /tmp
-		mount -o noatime,move $2/sys /sys 2>&-
-		mount -o noatime,move $2/overlay /overlay 2>&-
+		/bin/mount -o noatime,move $2/dev /dev
+		/bin/mount -o noatime,move $2/tmp /tmp
+		/bin/mount -o noatime,move $2/sys /sys 2>&-
+		/bin/mount -o noatime,move $2/overlay /overlay 2>&-
 		return 0
 	}
 }
@@ -582,16 +582,16 @@ fopivot() { # <rw_root> <ro_root> <dupe?>
 	root=$1
 	{
 		if grep -q overlay /proc/filesystems; then
-			mount -o noatime,lowerdir=/,upperdir=$1 -t overlayfs "overlayfs:$1" /mnt && root=/mnt
+			/bin/mount -o noatime,lowerdir=/,upperdir=$1 -t overlayfs "overlayfs:$1" /mnt && root=/mnt
 		elif grep -q mini_fo /proc/filesystems; then
-			mount -t mini_fo -o noatime,base=/,sto=$1 "mini_fo:$1" /mnt 2>&- && root=/mnt
+			/bin/mount -t mini_fo -o noatime,base=/,sto=$1 "mini_fo:$1" /mnt 2>&- && root=/mnt
 		else
-			mount --bind -o noatime / /mnt
-			mount --bind -o noatime,union "$1" /mnt && root=/mnt
+			/bin/mount --bind -o noatime / /mnt
+			/bin/mount --bind -o noatime,union "$1" /mnt && root=/mnt
 		fi
 	} || {
 		[ "$3" = "1" ] && {
-		mount | grep "on $1 type" 2>&- 1>&- || mount -o noatime,bind $1 $1
+		/bin/mount | grep "on $1 type" 2>&- 1>&- || /bin/mount -o noatime,bind $1 $1
 		dupe $1 $rom
 		}
 	}
@@ -600,7 +600,7 @@ fopivot() { # <rw_root> <ro_root> <dupe?>
 
 ramoverlay() {
 	mkdir -p /tmp/root
-	mount -t tmpfs -o noatime,mode=0755 root /tmp/root
+	/bin/mount -t tmpfs -o noatime,mode=0755 root /tmp/root
 	fopivot /tmp/root /rom 1
 }
 
diff --git a/package/base-files/files/lib/upgrade/common.sh b/package/base-files/files/lib/upgrade/common.sh
index 15ee70325b..824a099801 100644
--- a/package/base-files/files/lib/upgrade/common.sh
+++ b/package/base-files/files/lib/upgrade/common.sh
@@ -34,18 +34,18 @@ install_bin() { # <file> [ <symlink> ... ]
 }
 
 supivot() { # <new_root> <old_root>
-	mount | grep "on $1 type" 2>&- 1>&- || mount -o bind $1 $1
+	/bin/mount | grep "on $1 type" 2>&- 1>&- || /bin/mount -o bind $1 $1
 	mkdir -p $1$2 $1/proc $1/sys $1/dev $1/tmp $1/overlay && \
-	mount -o noatime,move /proc $1/proc && \
+	/bin/mount -o noatime,move /proc $1/proc && \
 	pivot_root $1 $1$2 || {
-		umount -l $1 $1
+		/bin/umount -l $1 $1
 		return 1
 	}
 
-	mount -o noatime,move $2/sys /sys
-	mount -o noatime,move $2/dev /dev
-	mount -o noatime,move $2/tmp /tmp
-	mount -o noatime,move $2/overlay /overlay 2>&-
+	/bin/mount -o noatime,move $2/sys /sys
+	/bin/mount -o noatime,move $2/dev /dev
+	/bin/mount -o noatime,move $2/tmp /tmp
+	/bin/mount -o noatime,move $2/overlay /overlay 2>&-
 	return 0
 }
 
@@ -67,12 +67,12 @@ run_ramfs() { # <command> [...]
 		exit 1
 	}
 
-	mount -o remount,ro /mnt
-	umount -l /mnt
+	/bin/mount -o remount,ro /mnt
+	/bin/umount -l /mnt
 
 	grep /overlay /proc/mounts > /dev/null && {
-		mount -o noatime,remount,ro /overlay
-		umount -l /overlay
+		/bin/mount -o noatime,remount,ro /overlay
+		/bin/umount -l /overlay
 	}
 
 	# spawn a new shell from ramdisk to reduce the probability of cache issues
@@ -144,7 +144,7 @@ v() {
 }
 
 rootfs_type() {
-	mount | awk '($3 ~ /^\/$/) && ($5 !~ /rootfs/) { print $5 }'
+	/bin/mount | awk '($3 ~ /^\/$/) && ($5 !~ /rootfs/) { print $5 }'
 }
 
 get_image() { # <source> [ <command> ]