diff --git a/src/wp-includes/load.php b/src/wp-includes/load.php
index 99e4b486d6..b41e650b6b 100644
--- a/src/wp-includes/load.php
+++ b/src/wp-includes/load.php
@@ -451,7 +451,7 @@ function wp_start_object_cache() {
 		wp_cache_init();
 
 	if ( function_exists( 'wp_cache_add_global_groups' ) ) {
-		wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'user_meta', 'site-transient', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss', 'global-posts', 'blog-id-cache' ) );
+		wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'user_meta', 'useremail', 'userslugs', 'site-transient', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss', 'global-posts', 'blog-id-cache' ) );
 		wp_cache_add_non_persistent_groups( array( 'comment', 'counts', 'plugins' ) );
 	}
 }
diff --git a/src/wp-includes/ms-blogs.php b/src/wp-includes/ms-blogs.php
index 4b0bdbc8d9..63f8270c85 100644
--- a/src/wp-includes/ms-blogs.php
+++ b/src/wp-includes/ms-blogs.php
@@ -625,10 +625,11 @@ function switch_to_blog( $new_blog, $deprecated = null ) {
 		wp_cache_init();
 
 		if ( function_exists( 'wp_cache_add_global_groups' ) ) {
-			if ( is_array( $global_groups ) )
+			if ( is_array( $global_groups ) ) {
 				wp_cache_add_global_groups( $global_groups );
-			else
-				wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'user_meta', 'site-transient', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss', 'global-posts', ' blog-id-cache' ) );
+			} else {
+				wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'user_meta', 'useremail', 'userslugs', 'site-transient', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss', 'global-posts', ' blog-id-cache' ) );
+			}
 			wp_cache_add_non_persistent_groups( array( 'comment', 'counts', 'plugins' ) );
 		}
 	}
@@ -688,10 +689,11 @@ function restore_current_blog() {
 		wp_cache_init();
 
 		if ( function_exists( 'wp_cache_add_global_groups' ) ) {
-			if ( is_array( $global_groups ) )
+			if ( is_array( $global_groups ) ) {
 				wp_cache_add_global_groups( $global_groups );
-			else
-				wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'user_meta', 'site-transient', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss', 'global-posts', ' blog-id-cache' ) );
+			} else {
+				wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'user_meta', 'useremail', 'userslugs', 'site-transient', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss', 'global-posts', ' blog-id-cache' ) );
+			}
 			wp_cache_add_non_persistent_groups( array( 'comment', 'counts', 'plugins' ) );
 		}
 	}