diff --git a/bin/executable_em b/bin/executable_em
index 81c0d70..5f65880 100644
--- a/bin/executable_em
+++ b/bin/executable_em
@@ -1,9 +1,10 @@
 #!/usr/bin/env bash
 PARENT_COMMAND=$(ps -o comm= $PPID)
 TTY=""
+export TTY
 export TERM=xterm-24bit
 
-if [ "${PARENT_COMMAND}" == $(basename $SHELL) ] || [ "${PARENT_COMMAND}" == "tmux: server"]; then
+if [ "${PARENT_COMMAND}" == "$(basename "$SHELL")" ] || [ "${PARENT_COMMAND}" == "tmux: server" ]; then
 	exec emacsclient -s comacs --create-frame --tty "$@"
 else
 	exec emacsclient --create-frame "$@"