diff --git a/src/util/DataResolver.js b/src/util/DataResolver.js
index 065badf2e..1aa0bb15c 100644
--- a/src/util/DataResolver.js
+++ b/src/util/DataResolver.js
@@ -44,7 +44,7 @@ class DataResolver {
       return image;
     }
     const file = await this.resolveFile(image, browser);
-    return this.constructor.resolveBase64(file);
+    return DataResolver.resolveBase64(file);
   }
 
   /**