--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -1524,17 +1524,21 @@ pref("toolkit.pageThumbs.minHeight", 190
 
 // Enable speech synthesis
 pref("media.webspeech.synth.enabled", true);
 
 pref("browser.esedbreader.loglevel", "Error");
 
 pref("browser.laterrun.enabled", false);
 
+#ifdef EARLY_BETA_OR_EARLIER
+pref("browser.migrate.automigrate.enabled", true);
+#else
 pref("browser.migrate.automigrate.enabled", false);
+#endif
 // 4 here means the suggestion notification will be automatically
 // hidden the 4th day, so it will actually be shown on 3 different days.
 pref("browser.migrate.automigrate.daysToOfferUndo", 4);
 pref("browser.migrate.automigrate.ui.enabled", true);
 
 // See comments in bug 1340115 on how we got to these numbers.
 pref("browser.migrate.chrome.history.limit", 2000);
 pref("browser.migrate.chrome.history.maxAgeInDays", 180);