diff --git a/src/Creatable.js b/src/Creatable.js
index <HASH>..<HASH> 100644
--- a/src/Creatable.js
+++ b/src/Creatable.js
@@ -26,7 +26,7 @@ class CreatableSelect extends React.Component {
 
 		if (isValidNewOption({ label: this.inputValue })) {
 			const option = newOptionCreator({ label: this.inputValue, labelKey: this.labelKey, valueKey: this.valueKey });
-			const isOptionUnique = this.isOptionUnique({ option });
+			const isOptionUnique = this.isOptionUnique({ option, options });
 
 			// Don't add the same option twice.
 			if (isOptionUnique) {
Also pass options as the input param