diff --git a/chrome/theme_aware_modal_prompts.css b/chrome/theme_aware_modal_prompts.css
index 4a61e16..0d5fd7c 100644
--- a/chrome/theme_aware_modal_prompts.css
+++ b/chrome/theme_aware_modal_prompts.css
@@ -1,6 +1,8 @@
 /* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/theme_aware_modal_prompts.css made available under Mozilla Public License v. 2.0
 See the above repository for updates as well as full license text. */
 
+/* DEPRECATED */
+
 /* Makes the popup of alert() prompt() etc. respept theme colors as well as be slightly differently styled */
 
 tabmodalprompt >.spacer-top{ display: none }
diff --git a/html_resources/tagmap.json b/html_resources/tagmap.json
index 53a9782..a89f1bc 100644
--- a/html_resources/tagmap.json
+++ b/html_resources/tagmap.json
@@ -125,7 +125,7 @@
 "textual_context_navigation.css":["navigation","popup","menu"],
 "textual_searchbar_one-offs.css":["popup","menu"],
 "theme_additional_windows.css":["legacy"],
-"theme_aware_modal_prompts.css":["effect","dark-mode","colors","popup"],
+"theme_aware_modal_prompts.css":["effect","dark-mode","colors","popup","legacy"],
 "theme_color_variables.css":["legacy"],
 "theme_popups_and_menus.css":["legacy"],
 "theme_sidebar.css":["legacy"],
diff --git a/tags.csv b/tags.csv
index 0336e63..3d75a33 100644
--- a/tags.csv
+++ b/tags.csv
@@ -124,7 +124,7 @@ tabs_on_bottom_menubar_on_top_patch.css,tabs,menubar,toolbars,classic,patch
 textual_context_navigation.css,navigation,popup,menu
 textual_searchbar_one-offs.css,popup,menu
 theme_additional_windows.css,legacy
-theme_aware_modal_prompts.css,effect,dark-mode,colors,popup
+theme_aware_modal_prompts.css,effect,dark-mode,colors,popup,legacy
 theme_color_variables.css,legacy,
 theme_popups_and_menus.css,legacy
 theme_sidebar.css,legacy