--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -1146,17 +1146,21 @@ pref("extensions.spellcheck.inline.max-m
 // belong in comm-central/editor/ui/composer.js
 
 pref("editor.use_custom_colors", false);
 pref("editor.singleLine.pasteNewlines",      2);
 pref("editor.use_css",                       false);
 pref("editor.css.default_length_unit",       "px");
 pref("editor.resizing.preserve_ratio",       true);
 pref("editor.positioning.offset",            0);
+#ifdef EARLY_BETA_OR_EARLIER
 pref("editor.use_div_for_default_newlines",  true);
+#else
+pref("editor.use_div_for_default_newlines",  false);
+#endif
 
 // Scripts & Windows prefs
 pref("dom.disable_beforeunload",            false);
 pref("dom.disable_window_flip",             false);
 pref("dom.disable_window_move_resize",      false);
 pref("dom.disable_window_status_change",    false);
 
 pref("dom.disable_window_open_feature.titlebar",    false);