diff --git a/modules/openapi-generator/src/main/resources/go/model_anyof.mustache b/modules/openapi-generator/src/main/resources/go/model_anyof.mustache
index 5bdefe2a9e2..f1d8c57c85f 100644
--- a/modules/openapi-generator/src/main/resources/go/model_anyof.mustache
+++ b/modules/openapi-generator/src/main/resources/go/model_anyof.mustache
@@ -20,7 +20,7 @@ func (dst *{{classname}}) UnmarshalJSON(data []byte) error {
 	{{#-first}}
 	// use discriminator value to speed up the lookup
 	var jsonDict map[string]interface{}
-	err := json.Unmarshal(data, &jsonDict)
+	err = json.Unmarshal(data, &jsonDict)
 	if err != nil {
 		return fmt.Errorf("Failed to unmarshal JSON into map for the discriminator lookup.")
 	}