diff --git a/frontend/components/report/designer/ReportPreviewModal.tsx b/frontend/components/report/designer/ReportPreviewModal.tsx
index c1b35854..92043666 100644
--- a/frontend/components/report/designer/ReportPreviewModal.tsx
+++ b/frontend/components/report/designer/ReportPreviewModal.tsx
@@ -1151,8 +1151,8 @@ export function ReportPreviewModal({ isOpen, onClose }: ReportPreviewModalProps)
                   <div
                     className="relative mx-auto overflow-hidden shadow-lg"
                     style={{
-                      width: `${page.width}mm`,
-                      minHeight: `${page.height}mm`,
+                      width: `${page.width * 4}px`,
+                      minHeight: `${page.height * 4}px`,
                       backgroundColor: page.background_color,
                     }}
                   >