diff --git a/wp-includes/version.php b/wp-includes/version.php
index f717b9c8c6..ff7dfb6f77 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-alpha-49071';
+$wp_version = '5.6-alpha-49072';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
diff --git a/wp-includes/wp-db.php b/wp-includes/wp-db.php
index ebcadb6ef0..80c117c1a0 100644
--- a/wp-includes/wp-db.php
+++ b/wp-includes/wp-db.php
@@ -1915,6 +1915,11 @@ class wpdb {
 		 */
 		$query = apply_filters( 'query', $query );
 
+		if ( ! $query ) {
+			$this->insert_id = 0;
+			return false;
+		}
+
 		$this->flush();
 
 		// Log how the function was called.