diff --git a/src/PdfCreator.ts b/src/PdfCreator.ts
index 4978602..d93a928 100644
--- a/src/PdfCreator.ts
+++ b/src/PdfCreator.ts
@@ -206,7 +206,7 @@ export class PdfCreator {
             includetext: true,
             textxalign: 'center',
         });
-        return `data:$image/png;base64,${barcode.toString('base64')}`;
+        return `data:image/png;base64,${barcode.toString('base64')}`;
     }
 
     /**