diff --git a/modules/openapi-generator/src/main/resources/go/model_simple.mustache b/modules/openapi-generator/src/main/resources/go/model_simple.mustache
index feeefee8875..187abbffe9f 100644
--- a/modules/openapi-generator/src/main/resources/go/model_simple.mustache
+++ b/modules/openapi-generator/src/main/resources/go/model_simple.mustache
@@ -314,7 +314,7 @@ func (o *{{{classname}}}) UnmarshalJSON(bytes []byte) (err error) {
 	{{#deprecated}}
 		// Deprecated
 	{{/deprecated}}
-		{{name}} {{^required}}{{^isNullable}}*{{/isNullable}}{{/required}}{{{dataType}}} `json:"{{baseName}}{{^required}},omitempty{{/required}}"{{#withXml}} xml:"{{baseName}}{{#isXmlAttribute}},attr{{/isXmlAttribute}}"{{/withXml}}{{#vendorExtensions.x-go-custom-tag}} {{{.}}}{{/vendorExtensions.x-go-custom-tag}}`
+		{{name}} {{^required}}{{^isNullable}}{{^isArray}}{{^isFreeFormObject}}*{{/isFreeFormObject}}{{/isArray}}{{/isNullable}}{{/required}}{{{dataType}}} `json:"{{baseName}}{{^required}},omitempty{{/required}}"{{#withXml}} xml:"{{baseName}}{{#isXmlAttribute}},attr{{/isXmlAttribute}}"{{/withXml}}{{#vendorExtensions.x-go-custom-tag}} {{{.}}}{{/vendorExtensions.x-go-custom-tag}}`
 	{{/vars}}
 	}