diff --git a/mithril.d.ts b/mithril.d.ts
index fba1b56a..72c451b3 100644
--- a/mithril.d.ts
+++ b/mithril.d.ts
@@ -258,6 +258,13 @@ declare namespace Mithril {
 			*/
 			param(key: string): string;
 
+			/**
+			* Gets all route parameters.
+			*
+			* @return All route parameters.
+			*/
+			param(): Object;
+
 			/**
 			* The current routing mode. This may be changed before calling
 			* m.route to change the part of the URL used to perform the routing.