diff --git a/.local/bin/samedir b/.local/bin/samedir
index 740dcfc..73facfd 100755
--- a/.local/bin/samedir
+++ b/.local/bin/samedir
@@ -1,6 +1,8 @@
 #!/bin/sh
 
+# Open a terminal window in the same directory as the currently active window.
+
 PID=$(xprop -id "$(xprop -root | awk '/_NET_ACTIVE_WINDOW\(WINDOW\)/{print $NF}')" | grep -m 1 PID | cut -d " " -f 3)
-PID=$(echo "$(pstree -lpA "$PID" | tail -n 1)" | awk -F'---' '{print $NF}' | sed -re 's/[^0-9]//g')
-cd "$(readlink /proc/"$PID"/cwd)"
+PID="$(pstree -lpA "$PID" | tail -n 1 | awk -F'---' '{print $NF}' | sed -re 's/[^0-9]//g')"
+cd "$(readlink /proc/"$PID"/cwd)" || return 1
 "$TERMINAL"