diff --git a/lib/pipeline/generate/impl/retrofit_api/api_parameters.dart b/lib/pipeline/generate/impl/retrofit_api/api_parameters.dart
index 0d7893d..89fb2f5 100644
--- a/lib/pipeline/generate/impl/retrofit_api/api_parameters.dart
+++ b/lib/pipeline/generate/impl/retrofit_api/api_parameters.dart
@@ -14,7 +14,7 @@ mixin RetrofitApiParameters {
       parameters.add(
         ApiMethodParameter(
           name: StringHelper.toDartPropertyName(param.name),
-          type: _getDartType(param.type),
+          type: _getDartTypeForParameter(param),
           annotation: _g.useRetrofit ? "@Path('${param.name}')" : '',
           required: param.required,
           description: param.description,
@@ -47,7 +47,7 @@ mixin RetrofitApiParameters {
         parameters.add(
           ApiMethodParameter(
             name: StringHelper.toDartPropertyName(param.name),
-            type: '${_getDartType(param.type)}$nullable',
+            type: '${_getDartTypeForParameter(param)}$nullable',
             annotation: _g.useRetrofit ? "@Query('${param.name}')" : '',
             required: param.required,
             description: param.description,