diff --git a/dialect/sql/scan.go b/dialect/sql/scan.go
index 2445ada42..e23752fc2 100644
--- a/dialect/sql/scan.go
+++ b/dialect/sql/scan.go
@@ -12,7 +12,7 @@ import (
 )
 
 // ColumnScanner is the interface that wraps the
-// three sql.Rows methods used for scanning.
+// four sql.Rows methods used for scanning.
 type ColumnScanner interface {
 	Next() bool
 	Scan(...interface{}) error
diff --git a/dialect/sql/schema/mysql.go b/dialect/sql/schema/mysql.go
index fbc341026..b799a77a4 100644
--- a/dialect/sql/schema/mysql.go
+++ b/dialect/sql/schema/mysql.go
@@ -17,7 +17,7 @@ import (
 	"github.com/facebook/ent/schema/field"
 )
 
-// MySQL is a mysql migration driver.
+// MySQL is a MySQL migration driver.
 type MySQL struct {
 	dialect.Driver
 	version string
@@ -238,7 +238,7 @@ func (d *MySQL) cType(c *Column) (t string) {
 		t = c.scanTypeOr("double")
 	case field.TypeTime:
 		t = c.scanTypeOr("timestamp")
-		// In MySQL, timestamp columns are `NOT NULL by default, and assigning NULL
+		// In MySQL, timestamp columns are `NOT NULL` by default, and assigning NULL
 		// assigns the current_timestamp(). We avoid this if not set otherwise.
 		c.Nullable = c.Attr == ""
 	case field.TypeEnum: