diff --git a/doc/help/commands.asciidoc b/doc/help/commands.asciidoc
index 6c9b7f1a8..b9e525075 100644
--- a/doc/help/commands.asciidoc
+++ b/doc/help/commands.asciidoc
@@ -765,7 +765,16 @@ Evaluate a JavaScript string.
 
 * +*-u*+, +*--url*+: Interpret js-code as a `javascript:...` URL.
 * +*-q*+, +*--quiet*+: Don't show resulting JS object.
-* +*-w*+, +*--world*+: Ignored on QtWebKit. On QtWebEngine, a world ID or name to run the snippet in.
+* +*-w*+, +*--world*+: Ignored on QtWebKit. On QtWebEngine, a world ID or name to run the snippet in. Predefined world names are:
+ 
+
+ - `main` (same world as the web page's JavaScript and
+ Greasemonkey, unless overridden via `@qute-js-world`)
+ - `application` (used for internal qutebrowser JS code,
+ should not be used via `:jseval` unless you know what
+ you're doing)
+ - `user` (currently unused)
+ - `jseval` (used for this command by default)
 
 
 ==== note
diff --git a/qutebrowser/browser/commands.py b/qutebrowser/browser/commands.py
index 40bb45dd0..13f57e7dc 100644
--- a/qutebrowser/browser/commands.py
+++ b/qutebrowser/browser/commands.py
@@ -1664,7 +1664,15 @@ class CommandDispatcher:
             url: Interpret js-code as a `javascript:...` URL.
             quiet: Don't show resulting JS object.
             world: Ignored on QtWebKit. On QtWebEngine, a world ID or name to
-                   run the snippet in.
+                   run the snippet in. Predefined world names are:
+
+                      - `main` (same world as the web page's JavaScript and
+                        Greasemonkey, unless overridden via `@qute-js-world`)
+                      - `application` (used for internal qutebrowser JS code,
+                        should not be used via `:jseval` unless you know what
+                        you're doing)
+                      - `user` (currently unused)
+                      - `jseval` (used for this command by default)
         """
         cmdutils.check_exclusive((file, url), 'fu')