diff --git a/library/Director/DataType/DataTypeDatalist.php b/library/Director/DataType/DataTypeDatalist.php
index e6666ce3..0da20e3c 100644
--- a/library/Director/DataType/DataTypeDatalist.php
+++ b/library/Director/DataType/DataTypeDatalist.php
@@ -51,7 +51,7 @@ class DataTypeDatalist extends DataTypeHook
         }
 
         if ($behavior === 'suggest_extend') {
-            $form->callOnSucess(function (DirectorForm $form) use ($name, $listId) {
+            $form->callOnSuccess(function (DirectorForm $form) use ($name, $listId) {
                 $value = (array) $form->getValue($name);
                 if ($value === null) {
                     return;
diff --git a/library/Director/Web/Form/QuickForm.php b/library/Director/Web/Form/QuickForm.php
index e35bccec..e4eb90f1 100644
--- a/library/Director/Web/Form/QuickForm.php
+++ b/library/Director/Web/Form/QuickForm.php
@@ -481,7 +481,7 @@ abstract class QuickForm extends QuickBaseForm
      * @param callable $callable
      * @return $this
      */
-    public function callOnSucess($callable)
+    public function callOnSuccess($callable)
     {
         if (! is_callable($callable)) {
             throw new InvalidArgumentException(