diff --git a/frontend/src/app/ui/admin/plan-blueprint/editor/plan-blueprint-editor.model.ts b/frontend/src/app/ui/admin/plan-blueprint/editor/plan-blueprint-editor.model.ts
index 287ce2348..dd4a8f8b6 100644
--- a/frontend/src/app/ui/admin/plan-blueprint/editor/plan-blueprint-editor.model.ts
+++ b/frontend/src/app/ui/admin/plan-blueprint/editor/plan-blueprint-editor.model.ts
@@ -67,6 +67,7 @@ export class PlanBlueprintEditorModel extends BaseEditorModel implements PlanBlu
 		section.id = Guid.create();
 		section.ordinal = index + 1;
 		section.hasTemplates = false;
+		section.prefillingSourcesEnabled = false;
 		return section.buildForm({ rootPath: 'definition.sections[' + index + '].' });
 	}