diff --git a/src/runtime/action/index.ts b/src/runtime/action/index.ts
index d170e0589e..0ac5bd0a35 100644
--- a/src/runtime/action/index.ts
+++ b/src/runtime/action/index.ts
@@ -1,8 +1,8 @@
-export interface ActionReturn<Parameters = any> {
-	update?: (parameters: Parameters) => void;
+export interface ActionReturn<Parameter = any> {
+	update?: (parameter: Parameter) => void;
 	destroy?: () => void;
 }
 
-export interface Action<Element = HTMLElement, Parameters = any> {
-	<Node extends Element>(node: Node, parameters?: Parameters): void | ActionReturn<Parameters>;
+export interface Action<Element = HTMLElement, Parameter = any> {
+	<Node extends Element>(node: Node, parameter?: Parameter): void | ActionReturn<Parameter>;
 }