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 a2d1b7443a02..6e60c6a180df 100644
--- a/modules/openapi-generator/src/main/resources/go/model_simple.mustache
+++ b/modules/openapi-generator/src/main/resources/go/model_simple.mustache
@@ -437,7 +437,7 @@ func (o *{{{classname}}}) UnmarshalJSON(data []byte) (err error) {
 	{{#deprecated}}
 		// Deprecated
 	{{/deprecated}}
-		{{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}}`
+		{{name}} {{^required}}{{^isNullable}}{{^isArray}}{{^isFreeFormObject}}*{{/isFreeFormObject}}{{/isArray}}{{/isNullable}}{{/required}}{{{dataType}}}{{{vendorExtensions.x-go-datatag}}}
 	{{/vars}}
 	}