diff --git a/aqt/mediasrv.py b/aqt/mediasrv.py
index 4c43f21f1..b1a981c90 100644
--- a/aqt/mediasrv.py
+++ b/aqt/mediasrv.py
@@ -59,6 +59,7 @@ class RequestHandler(http.server.SimpleHTTPRequestHandler):
             fs = os.fstat(f.fileno())
             self.send_header("Content-Length", str(fs[6]))
             self.send_header("Last-Modified", self.date_time_string(fs.st_mtime))
+            self.send_header("Access-Control-Allow-Origin", "*")
             self.end_headers()
             return f
         except: