--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -2423,17 +2423,17 @@ pref("layout.css.font-loading-api.enable
 // Should stray control characters be rendered visibly?
 #ifdef RELEASE_BUILD
 pref("layout.css.control-characters.visible", false);
 #else
 pref("layout.css.control-characters.visible", true);
 #endif
 
 // Is support for text-emphasis enabled?
-pref("layout.css.text-emphasis.enabled", false);
+pref("layout.css.text-emphasis.enabled", true);
 
 // pref for which side vertical scrollbars should be on
 // 0 = end-side in UI direction
 // 1 = end-side in document/content direction
 // 2 = right
 // 3 = left
 pref("layout.scrollbar.side", 0);