diff --git a/conn_pool.go b/conn_pool.go
index d43b6337..e8972a0b 100644
--- a/conn_pool.go
+++ b/conn_pool.go
@@ -319,7 +319,7 @@ func (p *ConnPool) createConnection() (*Conn, error) {
 func (p *ConnPool) createConnectionUnlocked() (*Conn, error) {
 	p.inProgressConnects++
 	p.cond.L.Unlock()
-	c, err := connect(p.config, p.connInfo)
+	c, err := connect(p.config, p.connInfo.DeepCopy())
 	p.cond.L.Lock()
 	p.inProgressConnects--