diff --git a/src/Composer/DependencyResolver/RuleWatchNode.php b/src/Composer/DependencyResolver/RuleWatchNode.php
index a08337f5e..59482ffdb 100644
--- a/src/Composer/DependencyResolver/RuleWatchNode.php
+++ b/src/Composer/DependencyResolver/RuleWatchNode.php
@@ -54,7 +54,7 @@ class RuleWatchNode
         $literals = $this->rule->getLiterals();
 
         // if there are only 2 elements, both are being watched anyway
-        if ($literals < 3) {
+        if (count($literals) < 3) {
             return;
         }