diff --git a/clause/where.go b/clause/where.go
index 46d0b319..3db8a3d3 100644
--- a/clause/where.go
+++ b/clause/where.go
@@ -21,11 +21,11 @@ func (where Where) Name() string {
 
 // Build build where clause
 func (where Where) Build(builder Builder) {
-    if len(where.Exprs) == 1 {
-        if andCondition, ok := where.Exprs[0].(AndConditions); ok {
-           where.Exprs = andCondition.Exprs
-        }
-    }
+	if len(where.Exprs) == 1 {
+		if andCondition, ok := where.Exprs[0].(AndConditions); ok {
+			where.Exprs = andCondition.Exprs
+		}
+	}
 
 	// Switch position if the first query expression is a single Or condition
 	for idx, expr := range where.Exprs {
@@ -153,11 +153,6 @@ func Not(exprs ...Expression) Expression {
 	if len(exprs) == 0 {
 		return nil
 	}
-	if len(exprs) == 1 {
-		if andCondition, ok := exprs[0].(AndConditions); ok {
-			exprs = andCondition.Exprs
-		}
-	}
 	return NotConditions{Exprs: exprs}
 }
 
diff --git a/clause/where_test.go b/clause/where_test.go
index aa9d06eb..28475a5c 100644
--- a/clause/where_test.go
+++ b/clause/where_test.go
@@ -105,6 +105,13 @@ func TestWhere(t *testing.T) {
 			"SELECT * FROM `users` WHERE (`users`.`id` <> ? AND NOT `score` <= ?)",
 			[]interface{}{"1", 100},
 		},
+		{
+			[]clause.Interface{clause.Select{}, clause.From{}, clause.Where{
+				Exprs: []clause.Expression{clause.Not(clause.And(clause.Eq{Column: clause.PrimaryColumn, Value: "1"}, clause.Expr{SQL: "`score` <= ?", Vars: []interface{}{100}, WithoutParentheses: false}))},
+			}},
+			"SELECT * FROM `users` WHERE NOT (`users`.`id` = ? AND `score` <= ?)",
+			[]interface{}{"1", 100},
+		},
 	}
 
 	for idx, result := range results {