diff --git a/CHANGELOG.md b/CHANGELOG.md
index 492a68ca4..817b9eb69 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 
 1. [](#new)
     * Added support for custom `FormFlash` save locations
+    * Added new configuration option `system.languages.include_default_lang_file_extension` to keep default language in `.md` files if set to `false`
 1. [](#bugfix)
     * Fixed `.md` page to be assigned to the default language and to be listed in translated/untranslated page list
     * Fixed `Language::getFallbackPageExtensions()` to append `.md` file after the default language extension
diff --git a/system/blueprints/config/system.yaml b/system/blueprints/config/system.yaml
index f67b92c84..c8c841b7b 100644
--- a/system/blueprints/config/system.yaml
+++ b/system/blueprints/config/system.yaml
@@ -340,6 +340,17 @@ form:
                             validate:
                                 type: bool
 
+                        languages.include_default_lang_file_extension:
+                            type: toggle
+                            label: PLUGIN_ADMIN.INCLUDE_DEFAULT_LANG_FILE_EXTENSION
+                            help: PLUGIN_ADMIN.INCLUDE_DEFAULT_LANG_HELP_FILE_EXTENSION
+                            highlight: 1
+                            options:
+                                1: PLUGIN_ADMIN.YES
+                                0: PLUGIN_ADMIN.NO
+                            validate:
+                                type: bool
+
                         languages.pages_fallback_only:
                             type: toggle
                             label: PLUGIN_ADMIN.PAGES_FALLBACK_ONLY