diff --git a/pkg/config/config.go b/pkg/config/config.go
index 0558857..3c8dc9f 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -140,13 +140,13 @@ type ReceiverConfig struct {
 	ReopenDuration *Duration `yaml:"reopen_duration" json:"reopen_duration"`
 
 	// Optional issue fields
-	Priority             string                 `yaml:"priority" json:"priority"`
-	Description          string                 `yaml:"description" json:"description"`
-	WontFixResolution    string                 `yaml:"wont_fix_resolution" json:"wont_fix_resolution"`
-	Fields               map[string]interface{} `yaml:"fields" json:"fields"`
-	Components           []string               `yaml:"components" json:"components"`
-	StaticLabels         []string               `yaml:"static_labels" json:"static_labels"`
-	FieldsToUpdate []string               `yaml:"update_always_fields" json:"update_always_fields"`
+	Priority          string                 `yaml:"priority" json:"priority"`
+	Description       string                 `yaml:"description" json:"description"`
+	WontFixResolution string                 `yaml:"wont_fix_resolution" json:"wont_fix_resolution"`
+	Fields            map[string]interface{} `yaml:"fields" json:"fields"`
+	Components        []string               `yaml:"components" json:"components"`
+	StaticLabels      []string               `yaml:"static_labels" json:"static_labels"`
+	FieldsToUpdate    []string               `yaml:"update_always_fields" json:"update_always_fields"`
 
 	// Label copy settings
 	AddGroupLabels *bool `yaml:"add_group_labels" json:"add_group_labels"`
@@ -313,8 +313,8 @@ func (c *Config) UnmarshalYAML(unmarshal func(interface{}) error) error {
 				}
 			}
 		}
-		if len(c.Defaults.CustomFieldsToUpdate) > 0 {
-			rc.CustomFieldsToUpdate = c.Defaults.CustomFieldsToUpdate
+		if len(c.Defaults.FieldsToUpdate) > 0 {
+			rc.FieldsToUpdate = c.Defaults.FieldsToUpdate
 		}
 		if len(c.Defaults.StaticLabels) > 0 {
 			rc.StaticLabels = append(rc.StaticLabels, c.Defaults.StaticLabels...)
diff --git a/pkg/config/config_test.go b/pkg/config/config_test.go
index 3ca2dcb..5e6ee99 100644
--- a/pkg/config/config_test.go
+++ b/pkg/config/config_test.go
@@ -134,7 +134,7 @@ type receiverTestConfig struct {
 	Description          string   `yaml:"description,omitempty"`
 	WontFixResolution    string   `yaml:"wont_fix_resolution,omitempty"`
 	AddGroupLabels       *bool    `yaml:"add_group_labels,omitempty"`
-	UpdateInComment   *bool    `yaml:"update_in_comment,omitempty"`
+	UpdateInComment      *bool    `yaml:"update_in_comment,omitempty"`
 	StaticLabels         []string `yaml:"static_labels" json:"static_labels"`
 	CustomFieldsToUpdate []string `yaml:"update_always_fields,omitempty"`
 
diff --git a/pkg/notify/notify.go b/pkg/notify/notify.go
index 11134dd..5af8eac 100644
--- a/pkg/notify/notify.go
+++ b/pkg/notify/notify.go
@@ -93,7 +93,7 @@ func (r *Receiver) Notify(data *alertmanager.Data, hashJiraLabel bool, updateSum
 
 	issueCustomFields := tcontainer.NewMarshalMap()
 
-	for _, field := range r.conf.CustomFieldsToUpdate {
+	for _, field := range r.conf.FieldsToUpdate {
 		if _, ok := r.conf.Fields[field]; ok {
 			issueCustomFields[field], err = deepCopyWithTemplate(r.conf.Fields[field], r.tmpl, data)
 			if err != nil {
@@ -147,10 +147,10 @@ func (r *Receiver) Notify(data *alertmanager.Data, hashJiraLabel bool, updateSum
 		}
 
 		for field := range issueCustomFields {
-			if _, ok := issue.Fields.Unknowns[CustomField]; ok {
-				if issue.Fields.Unknowns[CustomField] != issueCustomFields[CustomField] {
+			if _, ok := issue.Fields.Unknowns[field]; ok {
+				if issue.Fields.Unknowns[field] != issueCustomFields[field] {
 					retry, err = r.updateUnknownFields(issue.Key, tcontainer.MarshalMap(map[string]interface{}{
-						CustomField: issueCustomFields[CustomField],
+						field: issueCustomFields[field],
 					}))
 					if err != nil {
 						return retry, err
@@ -340,7 +340,7 @@ func (r *Receiver) search(projects []string, issueLabel string) (*jira.Issue, bo
 	projectList := "'" + strings.Join(projects, "', '") + "'"
 	query := fmt.Sprintf("project in(%s) and labels=%q order by resolutiondate desc", projectList, issueLabel)
 	options := &jira.SearchOptions{
-		Fields:     append([]string{"summary", "status", "resolution", "resolutiondate", "description", "comment"}, r.conf.CustomFieldsToUpdate...),
+		Fields:     append([]string{"summary", "status", "resolution", "resolutiondate", "description", "comment"}, r.conf.FieldsToUpdate...),
 		MaxResults: 2,
 	}
 
diff --git a/pkg/notify/notify_test.go b/pkg/notify/notify_test.go
index ecb3016..c306a5f 100644
--- a/pkg/notify/notify_test.go
+++ b/pkg/notify/notify_test.go
@@ -238,7 +238,7 @@ func testReceiverConfigWithCustomFields() *config.ReceiverConfig {
 		Fields: tcontainer.MarshalMap(map[string]interface{}{
 			"customfield_12345": `{{ (index .Alerts 0).Annotations.AlertValue }}`,
 		}),
-		CustomFieldsToUpdate: []string{"customfield_12345", "non_existant_field"},
+		FieldsToUpdate: []string{"customfield_12345", "non_existant_field"},
 	}
 }