diff --git a/enterprise/app/services/captain/llm/paginated_faq_generator_service.rb b/enterprise/app/services/captain/llm/paginated_faq_generator_service.rb
index 149152107..93957a7f3 100644
--- a/enterprise/app/services/captain/llm/paginated_faq_generator_service.rb
+++ b/enterprise/app/services/captain/llm/paginated_faq_generator_service.rb
@@ -19,7 +19,7 @@ class Captain::Llm::PaginatedFaqGeneratorService < Llm::LegacyBaseOpenAiService
   end
 
   def generate
-    raise CustomExceptions::PdfFaqGenerationError, I18n.t('captain.documents.missing_openai_file_id') if @document&.openai_file_id.blank?
+    raise CustomExceptions::Pdf::FaqGenerationError, I18n.t('captain.documents.missing_openai_file_id') if @document&.openai_file_id.blank?
 
     generate_paginated_faqs
   end
diff --git a/enterprise/app/services/captain/llm/pdf_processing_service.rb b/enterprise/app/services/captain/llm/pdf_processing_service.rb
index 82e3e9fbc..ac35a2848 100644
--- a/enterprise/app/services/captain/llm/pdf_processing_service.rb
+++ b/enterprise/app/services/captain/llm/pdf_processing_service.rb
@@ -10,7 +10,7 @@ class Captain::Llm::PdfProcessingService < Llm::LegacyBaseOpenAiService
     return if document.openai_file_id.present?
 
     file_id = upload_pdf_to_openai
-    raise CustomExceptions::PdfUploadError, I18n.t('captain.documents.pdf_upload_failed') if file_id.blank?
+    raise CustomExceptions::Pdf::UploadError, I18n.t('captain.documents.pdf_upload_failed') if file_id.blank?
 
     document.store_openai_file_id(file_id)
   end
diff --git a/lib/custom_exceptions/pdf.rb b/lib/custom_exceptions/pdf.rb
new file mode 100644
index 000000000..e6dfa7c41
--- /dev/null
+++ b/lib/custom_exceptions/pdf.rb
@@ -0,0 +1,19 @@
+module CustomExceptions::Pdf
+  class UploadError < CustomExceptions::Base
+    def initialize(message = 'PDF upload failed')
+      super(message)
+    end
+  end
+
+  class ValidationError < CustomExceptions::Base
+    def initialize(message = 'PDF validation failed')
+      super(message)
+    end
+  end
+
+  class FaqGenerationError < CustomExceptions::Base
+    def initialize(message = 'PDF FAQ generation failed')
+      super(message)
+    end
+  end
+end
diff --git a/lib/custom_exceptions/pdf_processing_error.rb b/lib/custom_exceptions/pdf_processing_error.rb
deleted file mode 100644
index 2c81f95d8..000000000
--- a/lib/custom_exceptions/pdf_processing_error.rb
+++ /dev/null
@@ -1,25 +0,0 @@
-module CustomExceptions
-  class PdfProcessingError < Base
-    def initialize(message = 'PDF processing failed')
-      super(message)
-    end
-  end
-
-  class PdfUploadError < PdfProcessingError
-    def initialize(message = 'PDF upload failed')
-      super(message)
-    end
-  end
-
-  class PdfValidationError < PdfProcessingError
-    def initialize(message = 'PDF validation failed')
-      super(message)
-    end
-  end
-
-  class PdfFaqGenerationError < PdfProcessingError
-    def initialize(message = 'PDF FAQ generation failed')
-      super(message)
-    end
-  end
-end
diff --git a/spec/enterprise/services/captain/llm/paginated_faq_generator_service_spec.rb b/spec/enterprise/services/captain/llm/paginated_faq_generator_service_spec.rb
index 5215a2d40..ca4518435 100644
--- a/spec/enterprise/services/captain/llm/paginated_faq_generator_service_spec.rb
+++ b/spec/enterprise/services/captain/llm/paginated_faq_generator_service_spec.rb
@@ -1,5 +1,4 @@
 require 'rails_helper'
-require 'custom_exceptions/pdf_processing_error'
 
 RSpec.describe Captain::Llm::PaginatedFaqGeneratorService do
   let(:document) { create(:captain_document) }
@@ -23,7 +22,7 @@ RSpec.describe Captain::Llm::PaginatedFaqGeneratorService do
       end
 
       it 'raises an error' do
-        expect { service.generate }.to raise_error(CustomExceptions::PdfFaqGenerationError)
+        expect { service.generate }.to raise_error(CustomExceptions::Pdf::FaqGenerationError)
       end
     end
 
diff --git a/spec/enterprise/services/captain/llm/pdf_processing_service_spec.rb b/spec/enterprise/services/captain/llm/pdf_processing_service_spec.rb
index fd519dcdd..7e9ec9a40 100644
--- a/spec/enterprise/services/captain/llm/pdf_processing_service_spec.rb
+++ b/spec/enterprise/services/captain/llm/pdf_processing_service_spec.rb
@@ -1,5 +1,4 @@
 require 'rails_helper'
-require 'custom_exceptions/pdf_processing_error'
 
 RSpec.describe Captain::Llm::PdfProcessingService do
   let(:document) { create(:captain_document) }
@@ -52,7 +51,7 @@ RSpec.describe Captain::Llm::PdfProcessingService do
       it 'raises error when upload fails' do
         allow(mock_client.files).to receive(:upload).and_return({ 'id' => nil })
 
-        expect { service.process }.to raise_error(CustomExceptions::PdfUploadError)
+        expect { service.process }.to raise_error(CustomExceptions::Pdf::UploadError)
       end
     end
   end