diff --git a/peppermint.guiconfig.json b/peppermint.guiconfig.json
index 206ddd1..5271d18 100644
--- a/peppermint.guiconfig.json
+++ b/peppermint.guiconfig.json
@@ -189,7 +189,7 @@
 	"css_theme_autoupdate_url": { "type": "url", "description": "A url that points to the css theme file to check for updates. If blank, then automatic updates are disabled.", "default": "" },
 	"css_theme_autoupdate_interval": { "type": "number", "description": "The interval, in seconds, that updates to the theme should be checked for. Defaults to every week. A value of -1 disables automatic updates.", "default": 604800 },
 	"css_theme_autoupdate_lastcheck": { "type": "number", "description": "The timestamp of the last time that updates for the selected theme were last checked for. To disable automatic updates, you should set <code>css_theme_autoupdate_interval</code> to <code>-1</code> instead of changing this setting.", "default": 0 },
-	"css_theme_gallery_index_url": { "type": "text", "description": "A url that points  to an index file that contains a list of themes. Used to populate the gallary. Multiple urls are allowed - separate them with a space.", "default": "https://starbeamrainbowlabs.com/labs/peppermint/themes/themeindex.php" },
+	"css_theme_gallery_index_url": { "type": "text", "description": "A url that points  to an index file that contains a list of themes. Used to populate the gallary. Multiple urls are allowed - separate them with a space.", "default": "https://starbeamrainbowlabs.com/labs/peppermint/themes/themeindex.json" },
 	"css_theme_gallery_selected_id": { "type": "text", "description": "The id of the currently selected theme. Defaults to the internal default theme.", "default": "default" },
 	"css": { "type": "textarea", "description": "A string of css to include. Will be included in the &lt;head&gt; of every page inside a &lt;style&gt; tag. This may also be an absolute url - urls will be referenced via a &lt;link rel='stylesheet' /&gt; tag. If the theme gallery is installed and automatic updates enabled, then the value of this property is managed by the theme gallery and changes may be overwritten (try the css_custom setting instead).", "default": "auto" },
 	"css_custom": { "type": "textarea", "description": "A string of custom CSS to include on top of the base theme css. Allows for theme customisations while still enabling automatic updates :D Just like the css setting, this one can also be a url.", "default": "/* Enter your custom css here. */" }