diff --git a/beetsplug/web/__init__.py b/beetsplug/web/__init__.py
index 240126e95..63f7f92ad 100644
--- a/beetsplug/web/__init__.py
+++ b/beetsplug/web/__init__.py
@@ -261,7 +261,7 @@ class QueryConverter(PathConverter):
                 for query in queries]
 
     def to_url(self, value):
-        return ','.join([v.replace(os.sep, '\\') for v in value])
+        return '/'.join([v.replace(os.sep, '\\') for v in value])
 
 
 class EverythingConverter(PathConverter):
diff --git a/docs/changelog.rst b/docs/changelog.rst
index 190ed2558..5370ab0f7 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -28,6 +28,9 @@ Bug fixes:
   ``r128_album_gain`` fields was changed from integer to float to fix loss of
   precision due to truncation.
   :bug:`4169`
+* :doc:`plugins/web`: Fix handling of "query" requests. Previously queries
+  consisting of more than one token (separated by a slash) always returned an
+  empty result.
 
 For packagers: