diff --git a/sh/shell/bash.sh b/sh/shell/bash.sh
index 20529c0..400f83c 100644
--- a/sh/shell/bash.sh
+++ b/sh/shell/bash.sh
@@ -2,29 +2,23 @@
 # │ shell │ bash │
 # ╰───────┴──────╯
 
-# based on currently running shell
-case "${RWX_SHELL}" in
-	"bash") ;;
-	# skip illegal syntax to come
-	*) return ;;
-esac
+if [ "${RWX_SHELL}" = "bash" ]; then
 
 # shellcheck disable=SC3033
 ..() {
 	cd ..
 }
-
 # shellcheck disable=SC3033
 ...() {
 	cd ../..
 }
-
 # shellcheck disable=SC3033
 ....() {
 	cd ../../..
 }
-
 # shellcheck disable=SC3033
 .....() {
 	cd ../../../..
 }
+
+fi