diff --git a/schema/index.go b/schema/index.go
index cf3338c3..a0a71d2c 100644
--- a/schema/index.go
+++ b/schema/index.go
@@ -27,7 +27,7 @@ func (schema *Schema) ParseIndexes() map[string]Index {
 	var indexes = map[string]Index{}
 
 	for _, field := range schema.Fields {
-		if field.TagSettings["INDEX"] != "" || field.TagSettings["UNIQUE_INDEX"] != "" {
+		if field.TagSettings["INDEX"] != "" || field.TagSettings["UNIQUEINDEX"] != "" {
 			for _, index := range parseFieldIndexes(field) {
 				idx := indexes[index.Name]
 				idx.Name = index.Name
@@ -76,7 +76,7 @@ func parseFieldIndexes(field *Field) (indexes []Index) {
 		if value != "" {
 			v := strings.Split(value, ":")
 			k := strings.TrimSpace(strings.ToUpper(v[0]))
-			if k == "INDEX" || k == "UNIQUE_INDEX" {
+			if k == "INDEX" || k == "UNIQUEINDEX" {
 				var (
 					name      string
 					tag       = strings.Join(v[1:], ":")
@@ -97,7 +97,7 @@ func parseFieldIndexes(field *Field) (indexes []Index) {
 					name = field.Schema.namer.IndexName(field.Schema.Table, field.Name)
 				}
 
-				if (k == "UNIQUE_INDEX") || settings["UNIQUE"] != "" {
+				if (k == "UNIQUEINDEX") || settings["UNIQUE"] != "" {
 					settings["CLASS"] = "UNIQUE"
 				}
 
diff --git a/schema/index_test.go b/schema/index_test.go
index 71a70a8c..f6c3d247 100644
--- a/schema/index_test.go
+++ b/schema/index_test.go
@@ -12,7 +12,7 @@ type UserIndex struct {
 	Name         string `gorm:"index"`
 	Name2        string `gorm:"index:idx_name,unique"`
 	Name3        string `gorm:"index:,sort:desc,collate:utf8,type:btree,length:10,where:name3 != 'jinzhu'"`
-	Name4        string `gorm:"unique_index"`
+	Name4        string `gorm:"uniqueIndex"`
 	Name5        int64  `gorm:"index:,class:FULLTEXT,comment:hello \\, world,where:age > 10"`
 	Name6        int64  `gorm:"index:profile,comment:hello \\, world,where:age > 10"`
 	Age          int64  `gorm:"index:profile,expression:ABS(age)"`
diff --git a/tests/associations_test.go b/tests/associations_test.go
index 9b4dd105..c1a4e2b2 100644
--- a/tests/associations_test.go
+++ b/tests/associations_test.go
@@ -41,7 +41,7 @@ func TestForeignKeyConstraints(t *testing.T) {
 
 	type Member struct {
 		ID      uint
-		Refer   uint `gorm:"unique_index"`
+		Refer   uint `gorm:"uniqueIndex"`
 		Name    string
 		Profile Profile `gorm:"Constraint:OnUpdate:CASCADE,OnDelete:CASCADE;FOREIGNKEY:MemberID;References:Refer"`
 	}
@@ -91,7 +91,7 @@ func TestForeignKeyConstraintsBelongsTo(t *testing.T) {
 	type Profile struct {
 		ID    uint
 		Name  string
-		Refer uint `gorm:"unique_index"`
+		Refer uint `gorm:"uniqueIndex"`
 	}
 
 	type Member struct {