diff --git a/src/wp-includes/class-wp-theme.php b/src/wp-includes/class-wp-theme.php
index b5ac408278fac..2f9e60b35cd12 100644
--- a/src/wp-includes/class-wp-theme.php
+++ b/src/wp-includes/class-wp-theme.php
@@ -1250,8 +1250,8 @@ public function get_post_templates() {
 			}
 
 			if ( current_theme_supports( 'block-templates' ) ) {
-				$block_templates = get_block_templates( array(), 'wp_template' );
 				foreach ( get_post_types( array( 'public' => true ) ) as $type ) {
+					$block_templates = get_block_templates( array( 'post_type' => $type ), 'wp_template' );
 					foreach ( $block_templates as $block_template ) {
 						$post_templates[ $type ][ $block_template->slug ] = $block_template->title;
 					}