diff --git a/src/wp-includes/post.php b/src/wp-includes/post.php
index b055e4bbc4..f5cfd0c32f 100644
--- a/src/wp-includes/post.php
+++ b/src/wp-includes/post.php
@@ -4333,7 +4333,7 @@ function get_page_uri( $page = 0 ) {
 
 	foreach ( $page->ancestors as $parent ) {
 		$parent = get_post( $parent );
-		if ( $parent ) {
+		if ( $parent && $parent->post_name ) {
 			$uri = $parent->post_name . '/' . $uri;
 		}
 	}
diff --git a/tests/phpunit/tests/post/getPageUri.php b/tests/phpunit/tests/post/getPageUri.php
index 6f766fcc67..5a5a0a0bea 100644
--- a/tests/phpunit/tests/post/getPageUri.php
+++ b/tests/phpunit/tests/post/getPageUri.php
@@ -46,6 +46,18 @@ class Tests_Post_getPageUri extends WP_UnitTestCase {
 		$this->assertEquals( 'child', get_page_uri( $child_id ) );
 	}
 
+	/**
+	 * @ticket 36174
+	 */
+	function test_get_page_uri_with_a_draft_parent_with_empty_slug() {
+		$parent_id = self::factory()->post->create( array( 'post_name' => 'parent' ) );
+		$child_id = self::factory()->post->create( array( 'post_name' => 'child', 'post_parent' => $parent_id ) );
+
+		wp_update_post( array( 'ID' => $parent_id, 'post_name' => '', 'post_status' => 'draft' ) );
+
+		$this->assertEquals( 'child', get_page_uri( $child_id ) );
+	}
+
 	/**
 	 * @ticket 26284
 	 */