diff --git a/wp-admin/includes/update.php b/wp-admin/includes/update.php
index c2b8a4257b..89cb1f858a 100644
--- a/wp-admin/includes/update.php
+++ b/wp-admin/includes/update.php
@@ -707,7 +707,7 @@ function maintenance_nag() {
 		 * This flag is cleared whenever a successful update occurs using Core_Upgrader.
 		 */
 		$comparison = ! empty( $failed['critical'] ) ? '>=' : '>';
-		if ( version_compare( $failed['attempted'], $wp_version, $comparison ) ) {
+		if ( isset( $failed['attempted'] ) && version_compare( $failed['attempted'], $wp_version, $comparison ) ) {
 			$nag = true;
 		}
 	}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 7c388052de..275382f1b0 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-46184';
+$wp_version = '5.3-alpha-46185';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.