diff --git a/tests/phpunit/tests/multisite/updatePostsCount.php b/tests/phpunit/tests/multisite/updatePostsCount.php
index 850d9fff59..270ac60c49 100644
--- a/tests/phpunit/tests/multisite/updatePostsCount.php
+++ b/tests/phpunit/tests/multisite/updatePostsCount.php
@@ -21,10 +21,21 @@ if ( is_multisite() ) :
 		 * @covers ::_update_posts_count_on_delete
 		 */
 		public function test_update_posts_count() {
+			$blog_id = self::factory()->blog->create();
+			switch_to_blog( $blog_id );
+
 			$original_post_count = (int) get_site()->post_count;
 
 			$post_id = self::factory()->post->create();
 
+			$post_count_after_creating = get_site()->post_count;
+
+			wp_delete_post( $post_id );
+
+			$post_count_after_deleting = get_site()->post_count;
+
+			restore_current_blog();
+
 			/*
 			 * Check that posts count is updated when a post is created:
 			 * add_action( 'transition_post_status', '_update_posts_count_on_transition_post_status', 10, 3 );
@@ -32,9 +43,7 @@ if ( is_multisite() ) :
 			 * Check that _update_posts_count_on_transition_post_status() is called on that filter,
 			 * which then calls update_posts_count() to update the count.
 			 */
-			$this->assertSame( $original_post_count + 1, get_site()->post_count, 'Post count should be incremented by 1.' );
-
-			wp_delete_post( $post_id );
+			$this->assertSame( $original_post_count + 1, $post_count_after_creating, 'Post count should be incremented by 1.' );
 
 			/*
 			 * Check that posts count is updated when a post is deleted:
@@ -43,7 +52,7 @@ if ( is_multisite() ) :
 			 * Check that _update_posts_count_on_delete() is called on that filter,
 			 * which then calls update_posts_count() to update the count.
 			 */
-			$this->assertSame( $original_post_count, get_site()->post_count, 'Post count should match the original count.' );
+			$this->assertSame( $original_post_count, $post_count_after_deleting, 'Post count should match the original count.' );
 		}
 	}