diff --git a/src/ConverterBase.php b/src/ConverterBase.php
index 4164e8c..85f5460 100644
--- a/src/ConverterBase.php
+++ b/src/ConverterBase.php
@@ -35,7 +35,7 @@ abstract class ConverterBase extends PluginBase implements ConverterInterface {
     // target module implements any of the hooks. Otherwise, return TRUE
     // unconditionally.
     if (isset($this->pluginDefinition['hook'])) {
-      return (boolean) array_filter((array) $this->pluginDefinition['hook'], [ $target->getIndexer('hook'), 'has' ]);
+      return (boolean) array_filter((array) $this->pluginDefinition['hook'], [ $target->getIndexer('function'), 'has' ]);
     }
     else {
       return TRUE;