diff --git a/test/js-specs.js b/test/js-specs.js
index 1cd139c..10c6236 100644
--- a/test/js-specs.js
+++ b/test/js-specs.js
@@ -629,6 +629,44 @@ describe('Common helpers', function () {
       });
     });
 
+    it('processes data correctly when serializer "multipart" is configured and form data contains file value (filename set)', (cb) => {
+      const formData = new FormDataMock();
+      formData.append('myFile', new BlobMock([testString], { type: 'application/octet-stream' }), 'file.name');
+
+      helpers.processData(formData, 'multipart', (data) => {
+        data.buffers.length.should.be.equal(1);
+        data.names.length.should.be.equal(1);
+        data.fileNames.length.should.be.equal(1);
+        data.types.length.should.be.equal(1);
+
+        data.buffers[0].should.be.eql(testStringBase64);
+        data.names[0].should.be.equal('myFile');
+        data.fileNames[0].should.be.equal('file.name');
+        data.types[0].should.be.equal('application/octet-stream');
+
+        cb();
+      });
+    });
+
+    it('processes data correctly when serializer "multipart" is configured and form data contains file value (filename empty)', (cb) => {
+      const formData = new FormDataMock();
+      formData.append('myFile', new BlobMock([testString], { type: 'application/octet-stream' }), '');
+
+      helpers.processData(formData, 'multipart', (data) => {
+        data.buffers.length.should.be.equal(1);
+        data.names.length.should.be.equal(1);
+        data.fileNames.length.should.be.equal(1);
+        data.types.length.should.be.equal(1);
+
+        data.buffers[0].should.be.eql(testStringBase64);
+        data.names[0].should.be.equal('myFile');
+        data.fileNames[0].should.be.equal('');
+        data.types[0].should.be.equal('application/octet-stream');
+
+        cb();
+      });
+    });
+
     it('processes data correctly when serializer "raw" is configured', (cb) => {
       const byteArray = new Uint8Array([1, 2, 3]);
       helpers.processData(byteArray, 'raw', (data) => {
diff --git a/test/mocks/File.mock.js b/test/mocks/File.mock.js
index 9806262..9c19e7b 100644
--- a/test/mocks/File.mock.js
+++ b/test/mocks/File.mock.js
@@ -3,7 +3,7 @@ const BlobMock = require('./Blob.mock');
 module.exports = class FileMock extends BlobMock {
   constructor(blob, fileName) {
     super(blob, { type: blob.type });
-    this._fileName = fileName || '';
+    this._fileName = fileName !== undefined ? fileName : 'blob';
     this.__lastModifiedDate = new Date();
   }
 
diff --git a/www/helpers.js b/www/helpers.js
index 805fcf7..b88d776 100644
--- a/www/helpers.js
+++ b/www/helpers.js
@@ -453,7 +453,7 @@ module.exports = function init(global, jsUtil, cookieHandler, messages, base64,
       reader.onload = function () {
         result.buffers.push(base64.fromArrayBuffer(reader.result));
         result.names.push(entry.value[0]);
-        result.fileNames.push(entry.value[1].name || 'blob');
+        result.fileNames.push(entry.value[1].name !== undefined ? entry.value[1].name : 'blob');
         result.types.push(entry.value[1].type || '');
         processFormDataIterator(iterator, textEncoder, result, onFinished);
       };
diff --git a/www/ponyfills.js b/www/ponyfills.js
index e49e6d7..b13d774 100644
--- a/www/ponyfills.js
+++ b/www/ponyfills.js
@@ -16,7 +16,7 @@ module.exports = function init(global) {
     } else if (global.Blob && value instanceof global.Blob) {
       // mimic File instance by adding missing properties
       value.lastModifiedDate = new Date();
-      value.name = filename || '';
+      value.name = filename !== undefined ? filename : 'blob';
     } else {
       value = String(value);
     }
@@ -44,4 +44,4 @@ module.exports = function init(global) {
   }
 
   return interface;
-};
\ No newline at end of file
+};