diff --git a/src/wp-includes/post.php b/src/wp-includes/post.php
index 51e45f2d92..eb98238d5e 100644
--- a/src/wp-includes/post.php
+++ b/src/wp-includes/post.php
@@ -6800,9 +6800,9 @@ function _publish_post_hook( $post_id ) {
 	}
 
 	if ( get_option( 'default_pingback_flag' ) ) {
-		add_post_meta( $post_id, '_pingme', '1' );
+		add_post_meta( $post_id, '_pingme', '1', true );
 	}
-	add_post_meta( $post_id, '_encloseme', '1' );
+	add_post_meta( $post_id, '_encloseme', '1', true );
 
 	$to_ping = get_to_ping( $post_id );
 	if ( ! empty( $to_ping ) ) {
diff --git a/tests/phpunit/tests/post.php b/tests/phpunit/tests/post.php
index 39a8bae14a..17f69fe2e1 100644
--- a/tests/phpunit/tests/post.php
+++ b/tests/phpunit/tests/post.php
@@ -1430,4 +1430,27 @@ class Tests_Post extends WP_UnitTestCase {
 		$post = get_post( $post_id );
 		self::assertEquals( strtotime( gmdate( 'Y-m-d H:i:s' ) ), strtotime( $post->post_date_gmt ), 'The dates should be equal', 2 );
 	}
+
+	/**
+	 * @ticket 48014
+	 */
+	public function test_updated_post_should_not_duplicate_enclosure_meta_fields() {
+		$post_id = self::factory()->post->create();
+
+		$encloseme_before = get_post_meta( $post_id, '_encloseme' );
+		$pingme_before    = get_post_meta( $post_id, '_pingme' );
+
+		$updated = wp_update_post( get_post( $post_id ), true );
+
+		$encloseme_after = get_post_meta( $post_id, '_encloseme' );
+		$pingme_after    = get_post_meta( $post_id, '_pingme' );
+
+		$this->assertSame( $post_id, $updated );
+
+		$this->assertCount( 1, $encloseme_before );
+		$this->assertCount( 1, $encloseme_after );
+
+		$this->assertCount( 1, $pingme_before );
+		$this->assertCount( 1, $pingme_after );
+	}
 }