diff --git a/mem/tb.go b/mem/tb.go
index 1e821cc8..c9b48c9e 100644
--- a/mem/tb.go
+++ b/mem/tb.go
@@ -66,7 +66,7 @@ func (this *TB) GetIX(name string) *IX {
 	return nil
 }
 
-func (this *TB) AdIX(ast *sql.DefineIndexStatement) {
+func (this *TB) AddIX(ast *sql.DefineIndexStatement) {
 	if ix, ok := this.IX[ast.Name]; ok {
 		ix.Name = ast.Name
 		ix.Cols = ast.Cols