diff --git a/src/Processors/AugmentTags.php b/src/Processors/AugmentTags.php
index a8f63a4c..21eeb2c3 100644
--- a/src/Processors/AugmentTags.php
+++ b/src/Processors/AugmentTags.php
@@ -46,7 +46,7 @@ public function __invoke(Analysis $analysis)
 
         foreach ($declaredTags as $tag) {
             if (!in_array($tag->name, $usedTagNames)) {
-                if (false !== $index = array_search($tag, $analysis->openapi->tags)) {
+                if (false !== $index = array_search($tag, $analysis->openapi->tags, true)) {
                     $analysis->annotations->detach($tag);
                     unset($analysis->openapi->tags[$index]);
                     $analysis->openapi->tags = array_values($analysis->openapi->tags);