diff --git a/gogh.sh b/gogh.sh
index fd6afe9..f11c76a 100755
--- a/gogh.sh
+++ b/gogh.sh
@@ -317,7 +317,7 @@ fi
 # |
 # | If terminal supports truecolor then we can show theme colors without applying the theme
 # | ===========================================
-if [[ "$COLORTERM" == "truecolor" ]] || [[ "$COLORTERM" == "24bit" ]]; then
+if [[ "${COLORTERM:-}" == "truecolor" ]] || [[ "${COLORTERM:-}" == "24bit" ]]; then
     # This function gets called in apply-colors.sh instead of gogh_colors
     # Calls to gogh_colors has also been move to apply-colors.sh to avoid printing twice
     function gogh_truecolor () {
@@ -362,4 +362,4 @@ for OP in "${OPTION[@]#0}"; do
         echo -e "\\033[0m\033[0;31m ~ INVALID OPTION! ~\\033[0m\033[0m"
         exit 1
     fi
-done
\ No newline at end of file
+done