diff --git a/src/Svelecte.svelte b/src/Svelecte.svelte
index e86144d..1d871d5 100644
--- a/src/Svelecte.svelte
+++ b/src/Svelecte.svelte
@@ -311,6 +311,7 @@
   $: {
     itemConfig.labelAsValue = labelAsValue;
   }
+  $: dropdownInputValue = createFilter($inputValue, options);
 
   /**
    * Dispatch change event on add options/remove selected items
@@ -371,7 +372,7 @@
     if (selectedKeys.has(opt[currentValueField])) return;
 
     if (typeof opt === 'string') {
-      opt = createFilter(opt);
+      opt = createFilter(opt, options);
       if (alreadyCreated.includes(opt)) return;
       !fetch && alreadyCreated.push(opt);
       opt = {
@@ -634,7 +635,7 @@
     {virtualList} {vlHeight} {vlItemSize} lazyDropdown={virtualList || lazyDropdown}
     dropdownIndex={dropdownActiveIndex}
     items={availableItems} {listIndex}
-    inputValue={createFilter($inputValue)} {hasDropdownOpened} {listMessage} {disabledField} createLabel={_i18n.createRowLabel}
+    inputValue={dropdownInputValue} {hasDropdownOpened} {listMessage} {disabledField} createLabel={_i18n.createRowLabel}
     metaKey={isIOS ? '⌘' : 'Ctrl'}
     itemComponent={dropdownItem}
     on:select={onSelect}
diff --git a/src/lib/utils.js b/src/lib/utils.js
index 035306c..43431e0 100644
--- a/src/lib/utils.js
+++ b/src/lib/utils.js
@@ -155,6 +155,13 @@ export function iOS() {
   || (navigator.userAgent.includes("Mac") && "ontouchend" in document)
 }
 
-export function defaultCreateFilter(val) {
-  return val.trim().split(' ').filter(ch => ch).join(' ');
+/**
+ * Formatter of newly created items. When `''` is returned, it means new option cannot be created.
+ * 
+ * @param {string} val 
+ * @param {array} options 
+ * @returns {string}
+ */
+export function defaultCreateFilter(val, options) {  
+  return (val || '').trim().split(' ').filter(ch => ch).join(' ');
 }