diff --git a/scripts/enable_tcp_debugging.sh b/scripts/enable_tcp_debugging.sh
index c8a17ab..2cbffaa 100644
--- a/scripts/enable_tcp_debugging.sh
+++ b/scripts/enable_tcp_debugging.sh
@@ -6,4 +6,4 @@
 # Usage: ./enable_tcp_debugging.sh <PORT>
 ################################################################################
 
-setprop service.adb.tcp.port $1
+setprop service.adb.tcp.port "$1"
diff --git a/scripts/find_device.sh b/scripts/find_device.sh
index a3c8689..418727d 100644
--- a/scripts/find_device.sh
+++ b/scripts/find_device.sh
@@ -8,4 +8,4 @@
 
 # TODO: show a "not found" message
 
-blkid -t UUID="$(cat $1)" | awk -v col=1 '{print $col}' | sed 's/.$//'
+blkid -t UUID="$(cat "$1")" | awk -v col=1 '{print $col}' | sed 's/.$//'
diff --git a/scripts/mount_ext4.sh b/scripts/mount_ext4.sh
index b71b2b0..f720b1a 100644
--- a/scripts/mount_ext4.sh
+++ b/scripts/mount_ext4.sh
@@ -12,7 +12,7 @@ if [ "$(readlink /proc/self/ns/mnt)" != "$(readlink /proc/1/ns/mnt)" ]; then
 fi
 
 mkdir -p -v /mnt/my_drive
-mount -t ext4 -o nosuid,nodev,noexec,noatime $1 /mnt/my_drive
+mount -t ext4 -o nosuid,nodev,noexec,noatime "$1" /mnt/my_drive
 
 mkdir -p -v /mnt/my_drive/the_binding
 chmod -R 777 /mnt/my_drive
diff --git a/scripts/remount_vfat.sh b/scripts/remount_vfat.sh
index 42927ab..8e1b4d7 100644
--- a/scripts/remount_vfat.sh
+++ b/scripts/remount_vfat.sh
@@ -27,7 +27,7 @@ if [ ! -d "$mounted_drive_path" ]; then
   exit 1
 fi
 
-fs_type=$(stat -f -c %T $mounted_drive_path)
+fs_type=$(stat -f -c %T "$mounted_drive_path")
 if [ "$fs_type" != "msdos" ]; then
     echo "detected filesystem type was not 'msdos', found $fs_type"
     exit 1