diff --git a/src/Fields/Image.php b/src/Fields/Image.php
index da66a9f..fe0d147 100644
--- a/src/Fields/Image.php
+++ b/src/Fields/Image.php
@@ -31,7 +31,7 @@ protected function resolveAttribute($resource, $attribute)
     {
         $media = parent::resolveAttribute($resource, $attribute);
 
-        $conversion = $this->meta()['usingConversion'] ?? [];
+        $conversion = $this->meta()['usingConversion'] ?? '';
 
         if ($media) {
             if ($media->hasGeneratedConversion($conversion)) {