diff --git a/classes/TagGenerator.php b/classes/TagGenerator.php
index 67fe1da..a466c64 100644
--- a/classes/TagGenerator.php
+++ b/classes/TagGenerator.php
@@ -84,7 +84,7 @@ class TagGenerator
         $result = collect([]);
 
         foreach ($this->path->versions() as $version) {
-            if (1 === $version->get('height')) {
+            if ('1' === $version->get('height')) {
                 continue;
             }
             if ($version->get('width') / ($version->get('height') + 1) > $aspectRatio || $version->get('width') / ($version->get('height') - 1) < $aspectRatio) {