diff --git a/tlssniffer.go b/tlssniffer.go
index 89a1798..cf733d7 100644
--- a/tlssniffer.go
+++ b/tlssniffer.go
@@ -208,7 +208,7 @@ func (c *Conn) isTLSConnection() (bool, error) {
 	}
 	c.hostname = hello.ServerName
 	if c.hostname == "" {
-		c.hostname, _, _ = net.SplitHostPort(c.Conn.RemoteAddr().String())
+		c.hostname, _, _ = net.SplitHostPort(c.Conn.LocalAddr().String())
 	}
 	return isTLS, nil
 }