diff --git a/conversions.js b/conversions.js
index 52eddda..c6aac2c 100644
--- a/conversions.js
+++ b/conversions.js
@@ -264,7 +264,7 @@ convert.rgb.keyword = function (rgb) {
 };
 
 convert.keyword.rgb = function (keyword) {
-	return cssKeywords[keyword];
+	return [...cssKeywords[keyword]];
 };
 
 convert.rgb.xyz = function (rgb) {