diff --git a/app/controllers/api/v1/projects/pipelines_controller.rb b/app/controllers/api/v1/projects/pipelines_controller.rb
index 305cc974f..6985e8b05 100644
--- a/app/controllers/api/v1/projects/pipelines_controller.rb
+++ b/app/controllers/api/v1/projects/pipelines_controller.rb
@@ -96,7 +96,7 @@ class Api::V1::Projects::PipelinesController < Api::V1::BaseController
   def save_yaml
     @pipeline = params[:id].present? ? Action::Pipeline.find(params[:id]) : Action::Pipeline.find_or_initialize_by(pipeline_name: params[:pipeline_name], project_id: @project.id)
     @pipeline.file_name = ".gitea/workflows/#{@pipeline.pipeline_name}.yml"
-    @pipeline.branch = params[:branch].to_json if params[:branch].present?
+    @pipeline.branch = params[:branch] if params[:branch].present?
     @pipeline.json = params[:pipeline_json].to_json if params[:pipeline_json].present?
     @pipeline.pipeline_name = params[:pipeline_name] if params[:pipeline_name].present?
     pipeline_yaml = params[:pipeline_yaml].present? ? params[:pipeline_yaml] : build_pipeline_yaml_new(@pipeline.pipeline_name, params[:pipeline_json])