diff --git a/apps/red-ui/src/app/upload/file-upload.service.ts b/apps/red-ui/src/app/upload/file-upload.service.ts
index 429a9fe4f..2bb40d6f2 100644
--- a/apps/red-ui/src/app/upload/file-upload.service.ts
+++ b/apps/red-ui/src/app/upload/file-upload.service.ts
@@ -30,6 +30,7 @@ export class FileUploadService {
     }
 
     uploadFiles(files: FileUploadModel[]) {
+        files.sort((a, b) => a.file.size - b.file.size);
         this.files.push(...files);
         files.forEach((newFile) => {
             this.scheduleUpload(newFile);
@@ -45,7 +46,7 @@ export class FileUploadService {
             let cnt = FileUploadService.MAX_PARALLEL_UPLOADS - this._activeUploads.length;
             while (cnt > 0) {
                 cnt--;
-                const popped = this._pendingUploads.pop();
+                const popped = this._pendingUploads.shift();
                 if (popped) {
                     const sub = this._createSubscription(popped);
                     this._activeUploads.push(sub);