diff --git a/AUTHORS b/AUTHORS
index a6b845f72..4c42dfba6 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -43,6 +43,7 @@ Luke Scott <luke at webconnex.com>
 Michael Woolnough <michael.woolnough at gmail.com>
 Nicola Peduzzi <thenikso at gmail.com>
 Olivier Mengué <dolmen at cpan.org>
+Omid Aladini <omidaladini at gmail.com>
 Paul Bonser <misterpib at gmail.com>
 Peter Schultz <peter.schultz at classmarkets.com>
 Runrioter Wung <runrioter at gmail.com>
diff --git a/rows.go b/rows.go
index 25aad8d03..863264ce1 100644
--- a/rows.go
+++ b/rows.go
@@ -64,7 +64,7 @@ func (rows *mysqlRows) ColumnTypeDatabaseTypeName(i int) string {
 }
 
 func (rows *mysqlRows) ColumnTypeNullable(i int) (nullable, ok bool) {
-	return rows.rs.columns[i].flags&flagNotNULL != 0, true
+	return rows.rs.columns[i].flags&flagNotNULL == 0, true
 }
 
 func (rows *mysqlRows) ColumnTypeScanType(i int) reflect.Type {