diff --git a/src/wp-includes/class-wp-block-bindings-registry.php b/src/wp-includes/class-wp-block-bindings-registry.php
index 65f5f13c36..de6a9d89e4 100644
--- a/src/wp-includes/class-wp-block-bindings-registry.php
+++ b/src/wp-includes/class-wp-block-bindings-registry.php
@@ -211,6 +211,25 @@ final class WP_Block_Bindings_Registry {
 		return isset( $this->sources[ $source_name ] );
 	}
 
+	/**
+	 * Wakeup magic method.
+	 *
+	 * @since 6.5.0
+	 */
+	public function __wakeup() {
+		if ( ! $this->sources ) {
+			return;
+		}
+		if ( ! is_array( $this->sources ) ) {
+			throw new UnexpectedValueException();
+		}
+		foreach ( $this->sources as $value ) {
+			if ( ! $value instanceof WP_Block_Bindings_Source ) {
+				throw new UnexpectedValueException();
+			}
+		}
+	}
+
 	/**
 	 * Utility method to retrieve the main instance of the class.
 	 *
diff --git a/src/wp-includes/class-wp-block.php b/src/wp-includes/class-wp-block.php
index 14565ab74a..455ea2e138 100644
--- a/src/wp-includes/class-wp-block.php
+++ b/src/wp-includes/class-wp-block.php
@@ -413,7 +413,7 @@ class WP_Block {
 		// Process the block bindings and get attributes updated with the values from the sources.
 		$computed_attributes = $this->process_block_bindings();
 		if ( ! empty( $computed_attributes ) ) {
-			// Merge the computed attributes with the original attributes
+			// Merge the computed attributes with the original attributes.
 			$this->attributes = array_merge( $this->attributes, $computed_attributes );
 		}