diff --git a/packages/dynamite/lib/src/openapi_builder.dart b/packages/dynamite/lib/src/openapi_builder.dart
index 3e965bc8..a2743b75 100644
--- a/packages/dynamite/lib/src/openapi_builder.dart
+++ b/packages/dynamite/lib/src/openapi_builder.dart
@@ -609,7 +609,7 @@ class OpenAPIBuilder implements Builder {
                                   break;
                                 case 'query':
                                   code.write(
-                                    "queryParameters['${parameter.name}'] = $value;",
+                                    "queryParameters['${parameter.name}${result is TypeResultList ? '[]' : ''}'] = $value;",
                                   );
                                   break;
                                 case 'header':