diff --git a/lib/bkctld-inc-lock b/lib/bkctld-inc-lock
index a71edf0..0888396 100755
--- a/lib/bkctld-inc-lock
+++ b/lib/bkctld-inc-lock
@@ -13,7 +13,7 @@ target_path="${2:?}"
 lock_target() {
     target="${1:?}"
     btrfs_bin=$(command -v btrfs)
-    if [ -z ${btrfs_bin} ]; then
+    if [ -z ${btrfs_bin} ]; then
         error "btrfs not found. Please install brtfs-progs."
     fi
     if is_btrfs "${target}"; then
@@ -26,7 +26,7 @@ lock_target() {
 unlock_target() {
     target="${1:?}"
     btrfs_bin=$(command -v btrfs)
-    if [ -z ${btrfs_bin} ]; then
+    if [ -z ${btrfs_bin} ]; then
         error "btrfs not found. Please install brtfs-progs."
     fi
     if is_btrfs "${target}"; then
diff --git a/lib/bkctld-remove b/lib/bkctld-remove
index 731d414..fec8015 100755
--- a/lib/bkctld-remove
+++ b/lib/bkctld-remove
@@ -53,7 +53,7 @@ rm -f "${CONFDIR}/${jail_name}"
 rm -rf "$(jail_config_dir "${jail_name}")"
 
 btrfs_bin=$(command -v btrfs)
-if [ -z ${btrfs_bin} ]; then
+if [ -z ${btrfs_bin} ]; then
     error "btrfs not found. Please install brtfs-progs."
 fi
 
diff --git a/lib/bkctld-rm b/lib/bkctld-rm
index 926877e..c5b8dde 100755
--- a/lib/bkctld-rm
+++ b/lib/bkctld-rm
@@ -63,7 +63,7 @@ delete_inc_btrfs() {
     inc_path=$(inc_path "${jail_name}" "${inc_name}")
     btrfs_bin=$(command -v btrfs)
 
-    if [ -z ${btrfs_bin} ]; then
+    if [ -z ${btrfs_bin} ]; then
         error "btrfs not found. Please install brtfs-progs."
     fi