diff --git a/clause/expression.go b/clause/expression.go
index 8d010522..bc07ad12 100644
--- a/clause/expression.go
+++ b/clause/expression.go
@@ -68,7 +68,7 @@ func (expr Expr) Build(builder Builder) {
 		}
 	}
 
-	if idx < len(expr.Vars) {
+	if idx > 0 && idx < len(expr.Vars) {
 		for _, v := range expr.Vars[idx:] {
 			builder.AddVar(builder, sql.NamedArg{Value: v})
 		}