diff --git a/pdfkit/pdfkit-tests.ts b/pdfkit/pdfkit-tests.ts
index f60a00b1c9..25a84e3566 100644
--- a/pdfkit/pdfkit-tests.ts
+++ b/pdfkit/pdfkit-tests.ts
@@ -24,7 +24,7 @@ doc.addPage({
 });
 
 doc.addPage({
-  margins: {
+    margin: {
     top: 50,
     bottom: 50,
     left: 72,