diff --git a/ddl/index.go b/ddl/index.go
index 5a56861f73..bd62948f94 100644
--- a/ddl/index.go
+++ b/ddl/index.go
@@ -29,12 +29,6 @@ import (
 )
 
 func buildIndexInfo(tblInfo *model.TableInfo, unique bool, indexName model.CIStr, indexID int64, idxColNames []*coldef.IndexColName) (*model.IndexInfo, error) {
-	for _, col := range tblInfo.Columns {
-		if col.Name.L == indexName.L {
-			return nil, errors.Errorf("CREATE INDEX: index name collision with existing column: %s", indexName)
-		}
-	}
-
 	// build offsets
 	idxColumns := make([]*model.IndexColumn, 0, len(idxColNames))
 	for _, ic := range idxColNames {
diff --git a/ddl/index_test.go b/ddl/index_test.go
index 32df668353..43399e7df8 100644
--- a/ddl/index_test.go
+++ b/ddl/index_test.go
@@ -612,6 +612,9 @@ func (s *testIndexSuite) TestAddIndex(c *C) {
 	job := testCreateIndex(c, ctx, d, s.dbInfo, tblInfo, true, "c1_uni", "c1")
 	testCheckJobDone(c, d, job, true)
 
+	job = testCreateIndex(c, ctx, d, s.dbInfo, tblInfo, true, "c1", "c1")
+	testCheckJobDone(c, d, job, true)
+
 	_, err = ctx.GetTxn(true)
 	c.Assert(err, IsNil)