diff --git a/doc/help/settings.asciidoc b/doc/help/settings.asciidoc
index f65f42fbc..77227c934 100644
--- a/doc/help/settings.asciidoc
+++ b/doc/help/settings.asciidoc
@@ -215,6 +215,7 @@
 |<<scrolling.bar,scrolling.bar>>|Show a scrollbar.
 |<<scrolling.smooth,scrolling.smooth>>|Enable smooth scrolling for web pages.
 |<<session_default_name,session_default_name>>|The name of the session to save by default.
+|<<spellcheck.languages,spellcheck.languages>>|Spell checking languages.
 |<<statusbar.hide,statusbar.hide>>|Hide the statusbar unless a message is shown.
 |<<statusbar.padding,statusbar.padding>>|Padding for the statusbar.
 |<<statusbar.position,statusbar.position>>|The position of the status bar.
@@ -2473,6 +2474,64 @@ Type: <<types,SessionName>>
 
 Default: empty
 
+[[spellcheck.languages]]
+=== spellcheck.languages
+Spell checking languages.
+You can check for available languages and install dictionaries using scripts/install_dict.py. Run the script with -h/--help for instructions.
+
+Type: <<types,List of String>>
+
+Valid values:
+
+ * +af-ZA+: Afrikaans (South Africa)
+ * +bg-BG+: Bulgarian (Bulgaria)
+ * +ca-ES+: Catalan (Spain)
+ * +cs-CZ+: Czech (Czech Republic)
+ * +da-DK+: Danish (Denmark)
+ * +de-DE+: German (Germany)
+ * +el-GR+: Greek (Greece)
+ * +en-CA+: English (Canada)
+ * +en-GB+: English (United Kingdom)
+ * +en-US+: English (United States)
+ * +es-ES+: Spanish (Spain)
+ * +et-EE+: Estonian (Estonia)
+ * +fa-IR+: Farsi (Iran)
+ * +fo-FO+: Faroese (Faroe Islands)
+ * +fr-FR+: French (France)
+ * +he-IL+: Hebrew (Israel)
+ * +hi-IN+: Hindi (India)
+ * +hr-HR+: Croatian (Croatia)
+ * +hu-HU+: Hungarian (Hungary)
+ * +id-ID+: Indonesian (Indonesia)
+ * +it-IT+: Italian (Italy)
+ * +ko+: Korean
+ * +lt-LT+: Lithuanian (Lithuania)
+ * +lv-LV+: Latvian (Latvia)
+ * +nb-NO+: Norwegian (Norway)
+ * +nl-NL+: Dutch (Netherlands)
+ * +pl-PL+: Polish (Poland)
+ * +pt-BR+: Portuguese (Brazil)
+ * +pt-PT+: Portuguese (Portugal)
+ * +ro-RO+: Romanian (Romania)
+ * +ru-RU+: Russian (Russia)
+ * +sh+: Serbo-Croatian
+ * +sk-SK+: Slovak (Slovakia)
+ * +sl-SI+: Slovenian (Slovenia)
+ * +sq+: Albanian
+ * +sr+: Serbian
+ * +sv-SE+: Swedish (Sweden)
+ * +ta-IN+: Tamil (India)
+ * +tg-TG+: Tajik (Tajikistan)
+ * +tr-TR+: Turkish (Turkey)
+ * +uk-UA+: Ukrainian (Ukraine)
+ * +vi-VN+: Vietnamese (Viet Nam)
+
+Default: empty
+
+On QtWebEngine, this setting requires Qt 5.8 or newer.
+
+On QtWebKit, this setting is unavailable.
+
 [[statusbar.hide]]
 === statusbar.hide
 Hide the statusbar unless a message is shown.