diff --git a/client.go b/client.go
index 5a3497b..d996410 100644
--- a/client.go
+++ b/client.go
@@ -582,8 +582,13 @@ func (client *Client) Capture(packet *Packet, captureTags map[string]string) (ev
 		return
 	}
 
-	packet.Release = release
-	packet.Environment = environment
+	if packet.Release == "" {
+		packet.Release = release
+	}
+
+	if packet.Environment == "" {
+		packet.Environment = environment
+	}
 
 	outgoingPacket := &outgoingPacket{packet, ch}