diff --git a/files/powermenu/type-1/powermenu.sh b/files/powermenu/type-1/powermenu.sh
index dd978af..1a5889e 100755
--- a/files/powermenu/type-1/powermenu.sh
+++ b/files/powermenu/type-1/powermenu.sh
@@ -95,9 +95,9 @@ case ${chosen} in
 		run_cmd --reboot
         ;;
     $lock)
-		if [[ -x '/usr/bin/betterlockscreen' ]]; then
+		if command -v betterlockscreen >/dev/null 2>&1; then
 			betterlockscreen -l
-		elif [[ -x '/usr/bin/i3lock' ]]; then
+		elif command -v i3lock >/dev/null 2>&1; then
 			i3lock
 		fi
         ;;
diff --git a/files/powermenu/type-2/powermenu.sh b/files/powermenu/type-2/powermenu.sh
index 23d0795..367bfba 100755
--- a/files/powermenu/type-2/powermenu.sh
+++ b/files/powermenu/type-2/powermenu.sh
@@ -96,9 +96,9 @@ case ${chosen} in
 		run_cmd --reboot
         ;;
     $lock)
-		if [[ -x '/usr/bin/betterlockscreen' ]]; then
+		if command -v betterlockscreen >/dev/null 2>&1; then
 			betterlockscreen -l
-		elif [[ -x '/usr/bin/i3lock' ]]; then
+		elif command -v i3lock >/dev/null 2>&1; then
 			i3lock
 		fi
         ;;
diff --git a/files/powermenu/type-3/powermenu.sh b/files/powermenu/type-3/powermenu.sh
index 8c1e47f..12142a4 100755
--- a/files/powermenu/type-3/powermenu.sh
+++ b/files/powermenu/type-3/powermenu.sh
@@ -90,9 +90,9 @@ case ${chosen} in
 		run_cmd --reboot
         ;;
     $lock)
-		if [[ -x '/usr/bin/betterlockscreen' ]]; then
+		if command -v betterlockscreen >/dev/null 2>&1; then
 			betterlockscreen -l
-		elif [[ -x '/usr/bin/i3lock' ]]; then
+		elif command -v i3lock >/dev/null 2>&1; then
 			i3lock
 		fi
         ;;
diff --git a/files/powermenu/type-4/powermenu.sh b/files/powermenu/type-4/powermenu.sh
index 17f20c7..c284d63 100755
--- a/files/powermenu/type-4/powermenu.sh
+++ b/files/powermenu/type-4/powermenu.sh
@@ -90,9 +90,9 @@ case ${chosen} in
 		run_cmd --reboot
         ;;
     $lock)
-		if [[ -x '/usr/bin/betterlockscreen' ]]; then
+		if command -v betterlockscreen >/dev/null 2>&1; then
 			betterlockscreen -l
-		elif [[ -x '/usr/bin/i3lock' ]]; then
+		elif command -v i3lock >/dev/null 2>&1; then
 			i3lock
 		fi
         ;;
diff --git a/files/powermenu/type-5/powermenu.sh b/files/powermenu/type-5/powermenu.sh
index 561e30c..ddf72ab 100755
--- a/files/powermenu/type-5/powermenu.sh
+++ b/files/powermenu/type-5/powermenu.sh
@@ -102,9 +102,9 @@ case ${chosen} in
 		run_cmd --hibernate
         ;;
     $lock)
-		if [[ -x '/usr/bin/betterlockscreen' ]]; then
+		if command -v betterlockscreen >/dev/null 2>&1; then
 			betterlockscreen -l
-		elif [[ -x '/usr/bin/i3lock' ]]; then
+		elif command -v i3lock >/dev/null 2>&1; then
 			i3lock
 		fi
         ;;
diff --git a/files/powermenu/type-6/powermenu.sh b/files/powermenu/type-6/powermenu.sh
index ad93faf..3bdbc6c 100755
--- a/files/powermenu/type-6/powermenu.sh
+++ b/files/powermenu/type-6/powermenu.sh
@@ -102,9 +102,9 @@ case ${chosen} in
 		run_cmd --hibernate
         ;;
     $lock)
-		if [[ -x '/usr/bin/betterlockscreen' ]]; then
+		if command -v betterlockscreen >/dev/null 2>&1; then
 			betterlockscreen -l
-		elif [[ -x '/usr/bin/i3lock' ]]; then
+		elif command -v i3lock >/dev/null 2>&1; then
 			i3lock
 		fi
         ;;