diff --git a/Customizations/JSON/LayoutConfigJson.ts b/Customizations/JSON/LayoutConfigJson.ts
index c7dda8468..afbc0aebc 100644
--- a/Customizations/JSON/LayoutConfigJson.ts
+++ b/Customizations/JSON/LayoutConfigJson.ts
@@ -337,6 +337,6 @@ export interface LayoutConfigJson {
     enableBackgroundLayerSelection?: boolean;
     enableShowAllQuestions?: boolean;
     enableDownload?: boolean;  
-    enablePdfDownload: boolean;
+    enablePdfDownload?: boolean;
 
 }