diff --git a/src/Http/Requests/ComputeImage.php b/src/Http/Requests/ComputeImage.php
index 06746112..457d3fff 100644
--- a/src/Http/Requests/ComputeImage.php
+++ b/src/Http/Requests/ComputeImage.php
@@ -35,7 +35,7 @@ public function rules()
     {
         return [
             'distance' => 'required|numeric|min:1',
-            'label_id' => 'required|id|exists:labels,id',
+            'label_id' => 'required|integer|exists:labels,id',
         ];
     }
 
diff --git a/src/Http/Requests/ComputeVolume.php b/src/Http/Requests/ComputeVolume.php
index a8eb8e5d..2ee5aede 100644
--- a/src/Http/Requests/ComputeVolume.php
+++ b/src/Http/Requests/ComputeVolume.php
@@ -35,7 +35,7 @@ public function rules()
     {
         return [
             'distance' => 'required|numeric|min:1',
-            'label_id' => 'required|id|exists:labels,id',
+            'label_id' => 'required|integer|exists:labels,id',
         ];
     }