diff --git a/modules/openapi-generator/src/main/resources/typescript/api/api.mustache b/modules/openapi-generator/src/main/resources/typescript/api/api.mustache
index 0ad7fa1ca6863..0ce9c09537e19 100644
--- a/modules/openapi-generator/src/main/resources/typescript/api/api.mustache
+++ b/modules/openapi-generator/src/main/resources/typescript/api/api.mustache
@@ -78,9 +78,7 @@ export class {{classname}}RequestFactory extends BaseAPIRequestFactory {
             }
             {{/isArray}}
             {{^isArray}}
-            for (const key of Object.keys(serializedParams)) {
-                requestContext.setQueryParam(key, serializedParams[key]);
-            }
+            requestContext.setQueryParam("{{baseName}}", serializedParams);
             {{/isArray}}
             {{/isExplode}}
             {{^isExplode}}
diff --git a/samples/openapi3/client/petstore/typescript/builds/explode-query/apis/FakeApi.ts b/samples/openapi3/client/petstore/typescript/builds/explode-query/apis/FakeApi.ts
index 3658e77fcbec7..48aa0480b0c69 100644
--- a/samples/openapi3/client/petstore/typescript/builds/explode-query/apis/FakeApi.ts
+++ b/samples/openapi3/client/petstore/typescript/builds/explode-query/apis/FakeApi.ts
@@ -1038,9 +1038,7 @@ export class FakeApiRequestFactory extends BaseAPIRequestFactory {
         // Query Params
         if (language !== undefined) {
             const serializedParams = ObjectSerializer.serialize(language, "{ [key: string]: string; }", "string");
-            for (const key of Object.keys(serializedParams)) {
-                requestContext.setQueryParam(key, serializedParams[key]);
-            }
+            requestContext.setQueryParam("language", serializedParams);
         }
 
         // Query Params