diff --git a/sites/all/modules/rules/includes/rules.core.inc b/sites/all/modules/rules/includes/rules.core.inc
index 86d3daa..9b578a9 100644
--- a/sites/all/modules/rules/includes/rules.core.inc
+++ b/sites/all/modules/rules/includes/rules.core.inc
@@ -841,7 +841,7 @@ abstract class RulesPlugin extends RulesExtendable {
     if (!empty($this->settings[$name . ':process'])) {
       // For processing, make sure the data is unwrapped now.
       $return = rules_unwrap_data(array($arg), array($info));
-      return isset($return[0]) ? $this->settings[$name . ':process']->process($return[0], $info, $state, $this) : NULL;
+      return $this->settings[$name . ':process']->process($return[0], $info, $state, $this);
     }
     // Support passing already sanitized values.
     if ($info['type'] == 'text' && !isset($skip_sanitize) && !empty($info['sanitize']) && !($arg instanceof EntityMetadataWrapper)) {