diff --git a/backend/test/tests.js b/backend/test/tests.js
index df8ae70..0a8f118 100644
--- a/backend/test/tests.js
+++ b/backend/test/tests.js
@@ -506,14 +506,19 @@ describe('Downloader', function() {
         const new_args1 = ['--age-limit', '25', '--yes-playlist', '--abort-on-error', '-o', '%(id)s'];
         const updated_args1 = utils.injectArgs(original_args1, new_args1);
         const expected_args1 = ['--no-resize-buffer', '--no-mtime', '--age-limit', '25', '--yes-playlist', '--abort-on-error', '-o', '%(id)s'];
-        assert(JSON.stringify(updated_args1), JSON.stringify(expected_args1));
+        assert(JSON.stringify(updated_args1) === JSON.stringify(expected_args1));
 
         const original_args2 = ['-o', '%(title)s.%(ext)s', '--write-info-json', '--print-json', '--audio-quality', '0', '-x', '--audio-format', 'mp3'];
         const new_args2 =  ['--add-metadata', '--embed-thumbnail', '--convert-thumbnails', 'jpg'];
         const updated_args2 = utils.injectArgs(original_args2, new_args2);
-        const expected_args2 =  ['-o', '%(title)s.%(ext)s', '--write-info-json', '--print-json', '--audio-quality', '0', '-x', '--audio-format', 'mp3', '--add-metadata', '--embed-thumbnail', '--convert_thumbnails', 'jpg'];
-        console.log(updated_args2);
-        assert(JSON.stringify(updated_args2), JSON.stringify(expected_args2));
+        const expected_args2 =  ['-o', '%(title)s.%(ext)s', '--write-info-json', '--print-json', '--audio-quality', '0', '-x', '--audio-format', 'mp3', '--add-metadata', '--embed-thumbnail', '--convert-thumbnails', 'jpg'];
+        assert(JSON.stringify(updated_args2) === JSON.stringify(expected_args2));
+
+        const original_args3 = ['-o', '%(title)s.%(ext)s'];
+        const new_args3 =  ['--min-filesize','1'];
+        const updated_args3 = utils.injectArgs(original_args3, new_args3);
+        const expected_args3 =  ['-o', '%(title)s.%(ext)s', '--min-filesize', '1'];
+        assert(JSON.stringify(updated_args3) === JSON.stringify(expected_args3));
     });
     describe('Twitch', async function () {
         const twitch_api = require('../twitch');
diff --git a/backend/utils.js b/backend/utils.js
index f4df0f8..21c0e50 100644
--- a/backend/utils.js
+++ b/backend/utils.js
@@ -414,10 +414,11 @@ exports.injectArgs = (original_args, new_args) => {
             if (CONSTS.YTDL_ARGS_WITH_VALUES.has(new_arg)) {
                 if (original_args.includes(new_arg)) {
                     const original_index = original_args.indexOf(new_arg);
-                    original_args.splice(original_index, 2);
+                    updated_args.splice(original_index, 2);
                 }
 
                 updated_args.push(new_arg, new_args[i + 1]);
+                i++; // we need to skip the arg value on the next loop
             } else {
                 if (!original_args.includes(new_arg)) {
                     updated_args.push(new_arg);