Index: wp-includes/class-wp-xmlrpc-server.php
===================================================================
--- wp-includes/class-wp-xmlrpc-server.php	(revision 39258)
+++ wp-includes/class-wp-xmlrpc-server.php	(working copy)
@@ -1270,7 +1270,7 @@
 			}
 		} elseif ( isset( $post_data['sticky'] ) )  {
 			if ( ! current_user_can( $post_type->cap->edit_others_posts ) ) {
-				return new IXR_Error( 401, __( 'Sorry, you are not allowed to stick this post.' ) );
+				return new IXR_Error( 401, __( 'Sorry, you are not allowed to make posts sticky.' ) );
 			}
 
 			$sticky = wp_validate_boolean( $post_data['sticky'] );