diff --git a/lib/mindee/parsing/v2/job_webhook.rb b/lib/mindee/parsing/v2/job_webhook.rb
index 4dd83185..ac291a0b 100644
--- a/lib/mindee/parsing/v2/job_webhook.rb
+++ b/lib/mindee/parsing/v2/job_webhook.rb
@@ -23,7 +23,7 @@ def initialize(server_response)
           @id = server_response['id']
           @created_at = parse_date(server_response['created_at'])
           @status     = server_response['status']
-          @error      = ErrorResponse.new(server_response['error']) if server_response.key?('error')
+          @error = ErrorResponse.new(server_response['error']) unless server_response['error'].nil?
         end
 
         # RST display.
diff --git a/sig/mindee/parsing/v2/job_webhook.rbs b/sig/mindee/parsing/v2/job_webhook.rbs
index e2869ad9..5d9ea920 100644
--- a/sig/mindee/parsing/v2/job_webhook.rbs
+++ b/sig/mindee/parsing/v2/job_webhook.rbs
@@ -4,7 +4,7 @@ module Mindee
     module V2
       class JobWebhook
         attr_reader created_at: DateTime?
-        attr_reader error: ErrorResponse
+        attr_reader error: ErrorResponse?
         attr_reader id: String
         attr_reader status: String
 
diff --git a/spec/v2/parsing/job_webhook_spec.rb b/spec/v2/parsing/job_webhook_spec.rb
new file mode 100644
index 00000000..bf046760
--- /dev/null
+++ b/spec/v2/parsing/job_webhook_spec.rb
@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+
+require 'mindee'
+
+RSpec.describe Mindee::Parsing::V2::JobWebhook do
+  describe '#initialize' do
+    context 'when error key is present but value is nil' do
+      it 'does not raise an error and sets @error to nil' do
+        server_response = {
+          'id' => '12345678-1234-1234-1234-123456789012',
+          'status' => 'Processing',
+          'error' => nil,
+        }
+
+        webhook = described_class.new(server_response)
+
+        expect(webhook.id).to eq('12345678-1234-1234-1234-123456789012')
+        expect(webhook.status).to eq('Processing')
+        expect(webhook.error).to be_nil
+      end
+    end
+
+    context 'when error key is absent' do
+      it 'does not raise an error and sets @error to nil' do
+        server_response = {
+          'id' => '12345678-1234-1234-1234-123456789012',
+          'status' => 'Processing',
+        }
+
+        webhook = described_class.new(server_response)
+
+        expect(webhook.id).to eq('12345678-1234-1234-1234-123456789012')
+        expect(webhook.status).to eq('Processing')
+        expect(webhook.error).to be_nil
+      end
+    end
+
+    context 'when error key is present with valid error data' do
+      it 'creates an ErrorResponse object' do
+        server_response = {
+          'id' => '12345678-1234-1234-1234-123456789012',
+          'status' => 'Failed',
+          'error' => {
+            'status' => 500,
+            'detail' => 'Internal server error',
+            'title' => 'Server Error',
+            'code' => 'INTERNAL_ERROR',
+          },
+        }
+
+        webhook = described_class.new(server_response)
+
+        expect(webhook.id).to eq('12345678-1234-1234-1234-123456789012')
+        expect(webhook.status).to eq('Failed')
+        expect(webhook.error).to be_a(Mindee::Parsing::V2::ErrorResponse)
+        expect(webhook.error.status).to eq(500)
+        expect(webhook.error.detail).to eq('Internal server error')
+      end
+    end
+  end
+end