diff --git a/src/wp-includes/ms-blogs.php b/src/wp-includes/ms-blogs.php
index e2c3f208f5..29e96bbf13 100644
--- a/src/wp-includes/ms-blogs.php
+++ b/src/wp-includes/ms-blogs.php
@@ -874,11 +874,13 @@ function get_last_updated( $deprecated = '', $start = 0, $quantity = 40 ) {
  */
 function _update_blog_date_on_post_publish( $new_status, $old_status, $post ) {
 	$post_type_obj = get_post_type_object( $post->post_type );
-	if ( ! $post_type_obj->public )
+	if ( ! $post_type_obj || ! $post_type_obj->public ) {
 		return;
+	}
 
-	if ( 'publish' != $new_status && 'publish' != $old_status )
+	if ( 'publish' != $new_status && 'publish' != $old_status ) {
 		return;
+	}
 
 	// Post was freshly published, published post was saved, or published post was unpublished.
 
@@ -896,11 +898,13 @@ function _update_blog_date_on_post_delete( $post_id ) {
 	$post = get_post( $post_id );
 
 	$post_type_obj = get_post_type_object( $post->post_type );
-	if ( ! $post_type_obj->public )
+	if ( ! $post_type_obj || ! $post_type_obj->public ) {
 		return;
+	}
 
-	if ( 'publish' != $post->post_status )
+	if ( 'publish' != $post->post_status ) {
 		return;
+	}
 
 	wpmu_update_blogs_date();
 }
diff --git a/src/wp-includes/post.php b/src/wp-includes/post.php
index e74e2562c2..2e70023a20 100644
--- a/src/wp-includes/post.php
+++ b/src/wp-includes/post.php
@@ -2314,7 +2314,7 @@ function _count_posts_cache_key( $type = 'post', $perm = '' ) {
 	$cache_key = 'posts-' . $type;
 	if ( 'readable' == $perm && is_user_logged_in() ) {
 		$post_type_object = get_post_type_object( $type );
-		if ( ! current_user_can( $post_type_object->cap->read_private_posts ) ) {
+		if ( $post_type_object && ! current_user_can( $post_type_object->cap->read_private_posts ) ) {
 			$cache_key .= '_' . $perm . '_' . get_current_user_id();
 		}
 	}