diff --git a/view/theme/frio/config.php b/view/theme/frio/config.php
index 13ab78477c..8bab362ff9 100644
--- a/view/theme/frio/config.php
+++ b/view/theme/frio/config.php
@@ -15,14 +15,14 @@ function theme_post(App $a)
 	}
 
 	if (isset($_POST['frio-settings-submit'])) {
-		PConfig::set(local_user(), 'frio', 'scheme',           defaults($_POST, 'frio_scheme'));
-		PConfig::set(local_user(), 'frio', 'nav_bg',           defaults($_POST, 'frio_nav_bg'));
-		PConfig::set(local_user(), 'frio', 'nav_icon_color',   defaults($_POST, 'frio_nav_icon_color'));
-		PConfig::set(local_user(), 'frio', 'link_color',       defaults($_POST, 'frio_link_color'));
-		PConfig::set(local_user(), 'frio', 'background_color', defaults($_POST, 'frio_background_color'));
-		PConfig::set(local_user(), 'frio', 'contentbg_transp', defaults($_POST, 'frio_contentbg_transp'));
-		PConfig::set(local_user(), 'frio', 'background_image', defaults($_POST, 'frio_background_image'));
-		PConfig::set(local_user(), 'frio', 'bg_image_option',  defaults($_POST, 'frio_bg_image_option'));
+		PConfig::set(local_user(), 'frio', 'scheme',           defaults($_POST, 'frio_scheme', ''));
+		PConfig::set(local_user(), 'frio', 'nav_bg',           defaults($_POST, 'frio_nav_bg', ''));
+		PConfig::set(local_user(), 'frio', 'nav_icon_color',   defaults($_POST, 'frio_nav_icon_color', ''));
+		PConfig::set(local_user(), 'frio', 'link_color',       defaults($_POST, 'frio_link_color', ''));
+		PConfig::set(local_user(), 'frio', 'background_color', defaults($_POST, 'frio_background_color', ''));
+		PConfig::set(local_user(), 'frio', 'contentbg_transp', defaults($_POST, 'frio_contentbg_transp', ''));
+		PConfig::set(local_user(), 'frio', 'background_image', defaults($_POST, 'frio_background_image', ''));
+		PConfig::set(local_user(), 'frio', 'bg_image_option',  defaults($_POST, 'frio_bg_image_option', ''));
 		PConfig::set(local_user(), 'frio', 'css_modified',     time());
 	}
 }