diff --git a/scripts/core/sxmo_appmenu.sh b/scripts/core/sxmo_appmenu.sh
index 3b503bb..fa70e3c 100755
--- a/scripts/core/sxmo_appmenu.sh
+++ b/scripts/core/sxmo_appmenu.sh
@@ -13,7 +13,7 @@ gracefulexit() {
 }
 
 confirm() {
-	PICKED="$(echo -e "Yes\nNo" | dmenu -l 16 -c -p "Confirm $1")"
+	PICKED="$(printf "Yes\nNo\n" | dmenu -l 16 -c -p "Confirm $1")"
 
 	if [ "$PICKED" = "Yes" ]; then
 		return 0
diff --git a/scripts/core/sxmo_common.sh b/scripts/core/sxmo_common.sh
index 44317b8..6e65758 100644
--- a/scripts/core/sxmo_common.sh
+++ b/scripts/core/sxmo_common.sh
@@ -18,7 +18,9 @@ export CACHEDIR="${XDG_CACHE_HOME:-$HOME/.cache}"/sxmo
 # shellcheck disable=SC2034
 export LOGDIR="${XDG_DATA_HOME:-$HOME/.local/share}"/sxmo/modem
 # shellcheck disable=SC2034
-export CONTACTFILE="${XDG_CONFIG_HOME:-$HOME/.config}/sxmo/contacts.tsv"
+export XDG_CONFIG_HOME="${XDG_CONFIG_HOME:-$HOME/.config}"
+# shellcheck disable=SC2034
+export CONTACTFILE="$XDG_CONFIG_HOME/sxmo/contacts.tsv"
 # shellcheck disable=SC2034
 export MODEMSTATEFILE="$XDG_RUNTIME_DIR/sxmo.modem.state"
 # shellcheck disable=SC2034
@@ -255,4 +257,5 @@ icon_bok=""
 icon_map=""
 
 #allow the user to override icons
-[ -x "$XDG_CONFIG_HOME/sxmo/hooks/icons" ] && source "$XDG_CONFIG_HOME/sxmo/hooks/icons"
+# shellcheck disable=SC1091
+[ -x "$XDG_CONFIG_HOME/sxmo/hooks/icons" ] && . "$XDG_CONFIG_HOME/sxmo/hooks/icons"
diff --git a/scripts/core/sxmo_migrate.sh b/scripts/core/sxmo_migrate.sh
index 9e70444..6159ce9 100644
--- a/scripts/core/sxmo_migrate.sh
+++ b/scripts/core/sxmo_migrate.sh
@@ -52,7 +52,7 @@ checkhooks() {
 						$EDITOR "$hook" "$defaulthook"
 					fi
 				else
-					printf "\e[33mHook $hook is identical to the default, so you don't need a custom hook, remove it? [Y/n]\e[0m"
+					printf "\e[33mHook %s is identical to the default, so you don't need a custom hook, remove it? [Y/n]\e[0m" "$hook"
 					if [ "n" != "$reply" ]; then
 						rm "$hook"
 					fi
diff --git a/scripts/core/sxmo_postwake.sh b/scripts/core/sxmo_postwake.sh
index 56816c7..39d7728 100755
--- a/scripts/core/sxmo_postwake.sh
+++ b/scripts/core/sxmo_postwake.sh
@@ -1,5 +1,7 @@
 #!/usr/bin/env sh
 
+# include common definitions
+# shellcheck source=scripts/core/sxmo_common.sh
 . "$(which sxmo_common.sh)"
 
 UNSUSPENDREASON="$1"
@@ -16,7 +18,7 @@ REDLED_PATH="/sys/class/leds/red:indicator/brightness"
 BLUELED_PATH="/sys/class/leds/blue:indicator/brightness"
 
 finish() {
-	kill $BLINKPID
+	kill "$BLINKPID"
 
 	echo 0 > "$REDLED_PATH"
 	echo 0 > "$BLUELED_PATH"