--- a/browser/components/nsBrowserGlue.js
+++ b/browser/components/nsBrowserGlue.js
@@ -619,28 +619,28 @@ BrowserGlue.prototype = {
 
     SessionStore.init();
 
     if (AppConstants.INSTALL_COMPACT_THEMES) {
       let vendorShortName = gBrandBundle.GetStringFromName("vendorShortName");
 
       LightweightThemeManager.addBuiltInTheme({
         id: "firefox-compact-light@mozilla.org",
-        name: gBrowserBundle.GetStringFromName("compactLightTheme.name"),
-        description: gBrowserBundle.GetStringFromName("compactLightTheme.description"),
+        name: gBrowserBundle.GetStringFromName("lightTheme.name"),
+        description: gBrowserBundle.GetStringFromName("lightTheme.description"),
         headerURL: "resource:///chrome/browser/content/browser/defaultthemes/compact.header.png",
         iconURL: "resource:///chrome/browser/content/browser/defaultthemes/compactlight.icon.svg",
         textcolor: "black",
         accentcolor: "white",
         author: vendorShortName,
       });
       LightweightThemeManager.addBuiltInTheme({
         id: "firefox-compact-dark@mozilla.org",
-        name: gBrowserBundle.GetStringFromName("compactDarkTheme.name"),
-        description: gBrowserBundle.GetStringFromName("compactDarkTheme.description"),
+        name: gBrowserBundle.GetStringFromName("darkTheme.name"),
+        description: gBrowserBundle.GetStringFromName("darkTheme.description"),
         headerURL: "resource:///chrome/browser/content/browser/defaultthemes/compact.header.png",
         iconURL: "resource:///chrome/browser/content/browser/defaultthemes/compactdark.icon.svg",
         textcolor: "white",
         accentcolor: "black",
         author: vendorShortName,
       });
     }
 

--- a/browser/locales/en-US/chrome/browser/browser.properties
+++ b/browser/locales/en-US/chrome/browser/browser.properties
@@ -212,23 +212,23 @@ addonInstallErrorIncompatible=%3$S could
 
 # LOCALIZATION NOTE (addonInstallErrorBlocklisted): %S is add-on name
 addonInstallErrorBlocklisted=%S could not be installed because it has a high risk of causing stability or security problems.
 
 unsignedAddonsDisabled.message=One or more installed add-ons cannot be verified and have been disabled.
 unsignedAddonsDisabled.learnMore.label=Learn More
 unsignedAddonsDisabled.learnMore.accesskey=L
 
-# LOCALIZATION NOTE (compactLightTheme.name): This is displayed in about:addons -> Appearance
-compactLightTheme.name=Compact Light
-compactLightTheme.description=A compact theme with a light color scheme.
+# LOCALIZATION NOTE (lightTheme.name): This is displayed in about:addons -> Appearance
+lightTheme.name=Light
+lightTheme.description=A theme with a light color scheme.
 
-# LOCALIZATION NOTE (compactDarkTheme.name): This is displayed in about:addons -> Appearance
-compactDarkTheme.name=Compact Dark
-compactDarkTheme.description=A compact theme with a dark color scheme.
+# LOCALIZATION NOTE (darkTheme.name): This is displayed in about:addons -> Appearance
+darkTheme.name=Dark
+darkTheme.description=A theme with a dark color scheme.
 
 # LOCALIZATION NOTE (lwthemeInstallRequest.message2): %S will be replaced with
 # the host name of the site.
 lwthemeInstallRequest.message2=This site (%S) attempted to install a theme.
 lwthemeInstallRequest.allowButton2=Allow
 lwthemeInstallRequest.allowButton.accesskey2=a
 
 # LOCALIZATION NOTE (lwthemeNeedsRestart.message):