diff --git a/utils.sh b/utils.sh
index 13497ea..cbf6805 100644
--- a/utils.sh
+++ b/utils.sh
@@ -344,7 +344,7 @@
 	if [ ! -v "${3:?}" ] && [ -f "$(get_uart_env_path "${1:?}" "${2:?}")/${3:?}" ]; then
 		cat "$(get_uart_env_path "${1:?}" "${2:?}")/${3:?}"
 	else
-		echo "${!3:?-${4}}"
+		echo "${!3-${4}}"
 	fi
 }