diff --git a/src/api.ts b/src/api.ts
index fbb25d8..c0cfbba 100644
--- a/src/api.ts
+++ b/src/api.ts
@@ -179,7 +179,7 @@ export class API implements Swagger {
   consumes?: string[];
   produces?: string[];
   definitions?: Swagger.Definitions;
-  parameters?: Swagger.Parameters;
+  parameters?: Swagger.ParameterDefinitionObject;
   responses?: Swagger.Responses;
   security?: Swagger.Security[];
   securityDefinitions?: Swagger.SecurityDefinitions;
diff --git a/src/swagger.ts b/src/swagger.ts
index a2dba87..bfe5d3b 100644
--- a/src/swagger.ts
+++ b/src/swagger.ts
@@ -8,7 +8,7 @@ export interface Swagger {
   consumes?: string[];
   produces?: string[];
   definitions?: Swagger.Definitions;
-  parameters?: Swagger.Parameters;
+  parameters?: Swagger.ParameterDefinitionObject;
   responses?: Swagger.Responses;
   security?: Swagger.Security[];
   securityDefinitions?: Swagger.SecurityDefinitions;
@@ -46,6 +46,10 @@ export namespace Swagger {
     [key:string]: Swagger.Schema
   }
 
+  export interface ParameterDefinitionObject {
+    [id: string]: Parameter;
+  }
+
   export type Parameters = (Parameter | Reference)[];
 
   export interface Path {