diff --git a/lib/bashly/libraries/colors/colors.sh b/lib/bashly/libraries/colors/colors.sh
index 7458e2d9..b98fbd7d 100644
--- a/lib/bashly/libraries/colors/colors.sh
+++ b/lib/bashly/libraries/colors/colors.sh
@@ -13,7 +13,7 @@
 print_in_color() {
   local color="$1"
   shift
-  if [[ -z ${NO_COLOR+x} ]]; then
+  if [[ "${NO_COLOR:-}" == "" ]]; then
     printf "$color%b\e[0m\n" "$*"
   else
     printf "%b\n" "$*"