diff --git a/SGGL/BLL/HJGL/WeldingManage/PipelineComponentService.cs b/SGGL/BLL/HJGL/WeldingManage/PipelineComponentService.cs
index 615d0498..ddf092cf 100644
--- a/SGGL/BLL/HJGL/WeldingManage/PipelineComponentService.cs
+++ b/SGGL/BLL/HJGL/WeldingManage/PipelineComponentService.cs
@@ -221,7 +221,7 @@ namespace BLL
         {
             Model.SGGLDB db = Funs.DB;
             Model.HJGL_Pipeline_Component newPipeline = new Model.HJGL_Pipeline_Component();
-            pipeline.IsPrint ??= false;
+            pipeline.IsPrint = false;
             newPipeline.PipelineComponentId = pipeline.PipelineComponentId;
             newPipeline.PipelineId = pipeline.PipelineId;
             newPipeline.PreUnit = pipeline.PreUnit;