--- a/mobile/android/base/locales/en-US/android_strings.dtd
+++ b/mobile/android/base/locales/en-US/android_strings.dtd
@@ -285,17 +285,17 @@
 <!-- Localization note (pref_category_experimental): Title of a sub category in the 'advanced' category
      for experimental features. -->
 <!ENTITY pref_category_experimental "Experimental features">
 
 <!-- Custom Tabs is an Android API for allowing third-party apps to open URLs in a customized UI.
      Instead of switching to the browser it appears as if the user stays in the third-party app.
      For more see: https://developer.chrome.com/multidevice/android/customtabs -->
 <!ENTITY pref_custom_tabs2 "Custom Tabs">
-<!ENTITY pref_custom_tabs_summary4 "Allow apps to open web content in a quickly loading custom tab.">
+<!ENTITY pref_custom_tabs_summary4 "Allow apps to open web content in a quickly loading custom tab">
 
 <!-- Localization note (custom_tabs_menu_item_open_in): The variable is replaced by the name of
      default browser from user's preference, such as "Open in Firefox" -->
 <!ENTITY custom_tabs_menu_item_open_in "Open in &formatS;">
 <!ENTITY custom_tabs_menu_footer "Powered by &brandShortName;">
 <!-- Long-click title of CustomTabsActivity will copy URL to clipboard and display this hint -->
 <!ENTITY custom_tabs_hint_url_copy "URL copied">