diff --git a/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-retrofit2/formParams.mustache b/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-retrofit2/formParams.mustache
index 66d904c740c..fe5c9db6905 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-retrofit2/formParams.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-retrofit2/formParams.mustache
@@ -1 +1 @@
-{{#isFormParam}}{{^isFile}}{{#isMultipart}}@Part{{/isMultipart}}{{^isMultipart}}@Field{{/isMultipart}}("{{baseName}}") {{{paramName}}}: {{{dataType}}}{{#required}}{{#defaultValue}} = {{^isNumber}}{{{defaultValue}}}{{/isNumber}}{{#isNumber}}{{{dataType}}}("{{{defaultValue}}}"){{/isNumber}}{{/defaultValue}}{{/required}}{{^required}}?{{#defaultValue}} = {{^isNumber}}{{{defaultValue}}}{{/isNumber}}{{#isNumber}}{{{dataType}}}("{{{defaultValue}}}"){{/isNumber}}{{/defaultValue}}{{^defaultValue}} = null{{/defaultValue}}{{/required}}{{/isFile}}{{#isFile}}{{#isMultipart}}@Part{{/isMultipart}}{{^isMultipart}}@Field("{{baseName}}"){{/isMultipart}} {{{paramName}}}: MultipartBody.Part{{^required}}? = null{{/required}}{{/isFile}}{{/isFormParam}}
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+{{#isFormParam}}{{^isFile}}{{#isMultipart}}@Part{{/isMultipart}}{{^isMultipart}}@Field{{/isMultipart}}("{{baseName}}") {{{paramName}}}: {{{dataType}}}{{#required}}{{#defaultValue}} = {{^isNumber}}{{{defaultValue}}}{{/isNumber}}{{#isNumber}}{{{dataType}}}("{{{defaultValue}}}"){{/isNumber}}{{/defaultValue}}{{/required}}{{^required}}?{{#defaultValue}} = {{^isNumber}}{{{defaultValue}}}{{/isNumber}}{{#isNumber}}{{{dataType}}}("{{{defaultValue}}}"){{/isNumber}}{{/defaultValue}}{{^defaultValue}} = null{{/defaultValue}}{{/required}}{{/isFile}}{{#isFile}}{{#isMultipart}}@Part{{/isMultipart}}{{^isMultipart}}@Field("{{baseName}}"){{/isMultipart}} {{{paramName}}}: {{#isCollectionFormatMulti}}List<{{/isCollectionFormatMulti}}MultipartBody.Part{{#isCollectionFormatMulti}}>{{/isCollectionFormatMulti}}{{^required}}? = null{{/required}}{{/isFile}}{{/isFormParam}}
\ No newline at end of file