diff --git a/plinth/modules/storage/urls.py b/plinth/modules/storage/urls.py
index 1eda3efa0..b39b07bb4 100644
--- a/plinth/modules/storage/urls.py
+++ b/plinth/modules/storage/urls.py
@@ -25,6 +25,6 @@ from . import views
 urlpatterns = [
     url(r'^sys/storage/$', views.index, name='index'),
     url(r'^sys/storage/expand$', views.expand, name='expand'),
-    url(r'^sys/storage/eject/(?P<device_path>[\w%]+)/$', views.eject,
-        name='eject')
+    url(r'^sys/storage/eject/(?P<device_path>[A-Za-z0-9%_.\-~]+)/$',
+        views.eject, name='eject')
 ]