Index: src/wp-admin/update-core.php
===================================================================
--- src/wp-admin/update-core.php	(revision 49672)
+++ src/wp-admin/update-core.php	(working copy)
@@ -323,20 +323,16 @@
 		$can_set_update_option = false;
 	}
 
-	if ( defined( 'AUTOMATIC_UPDATER_DISABLED' )
-		|| has_filter( 'automatic_updater_disabled' )
-	) {
-		if ( true === AUTOMATIC_UPDATER_DISABLED
-			/** This filter is documented in wp-admin/includes/class-wp-automatic-updater.php */
-			|| true === apply_filters( 'automatic_updater_disabled', false )
+	if ( defined( 'AUTOMATIC_UPDATER_DISABLED' ) && true === AUTOMATIC_UPDATER_DISABLED
+		|| has_filter( 'automatic_updater_disabled' ) && true === apply_filters( 'automatic_updater_disabled', false )
 		) {
 			$upgrade_dev   = false;
 			$upgrade_minor = false;
 			$upgrade_major = false;
-		}
-		// The UI is overridden by the AUTOMATIC_UPDATER_DISABLED constant.
-		$can_set_update_option = false;
-	}
+		} else if ( defined( 'AUTOMATIC_UPDATER_DISABLED' ) || has_filter( 'automatic_updater_disabled' ) ) {
+			// The UI is overridden by the AUTOMATIC_UPDATER_DISABLED constant.
+			$can_set_update_option = false;
+        }
 
 	// Is the UI overridden by a plugin using the allow_major_auto_core_updates filter?
 	if ( has_filter( 'allow_major_auto_core_updates' ) ) {