diff --git a/wp-admin/update-core.php b/wp-admin/update-core.php
index 9647ee0fae..9c20c92d78 100644
--- a/wp-admin/update-core.php
+++ b/wp-admin/update-core.php
@@ -70,7 +70,7 @@ function dismissed_updates() {
 	<?php
 		echo '<p class="hide-if-no-js"><a id="show-dismissed" href="#">'.__('Show hidden updates').'</a></p>';
 		echo '<ul id="dismissed-updates" class="core-updates dismissed">';
-		foreach($dismissed as $update) {
+		foreach( (array) $dismissed as $update) {
 			echo '<li>';
 			list_core_update( $update );
 			echo '</li>';
@@ -108,7 +108,7 @@ function core_upgrade_preamble() {
 
 	echo '<ul class="core-updates">';
 	$alternate = true;
-	foreach( $updates as $update ) {
+	foreach( (array) $updates as $update ) {
 		$class = $alternate? ' class="alternate"' : '';
 		$alternate = !$alternate;
 		echo "<li $class>";