diff --git a/man/signal-cli.1.adoc b/man/signal-cli.1.adoc
index 7781b1c5..38e432d5 100644
--- a/man/signal-cli.1.adoc
+++ b/man/signal-cli.1.adoc
@@ -103,7 +103,7 @@ Link another device to this device.
 Only works, if this is the master device.
 
 *--uri* URI::
-Specify the uri contained in the QR code shown by the new device.
+Specify the uri contained in the QR code shown by the new device. You will need the full uri enclosed in quotation marks, such as "tsdevice:/?uuid=....."
 
 === listDevices
 
diff --git a/src/main/java/org/asamk/signal/manager/Manager.java b/src/main/java/org/asamk/signal/manager/Manager.java
index b896b0b1..a906ac93 100644
--- a/src/main/java/org/asamk/signal/manager/Manager.java
+++ b/src/main/java/org/asamk/signal/manager/Manager.java
@@ -754,7 +754,7 @@ public class Manager implements Closeable {
         if (name.isEmpty()) {
             name = null;
         }
-        if (members.size() == 0) {
+        if (members.isEmpty()) {
             members = null;
         }
         if (avatar.isEmpty()) {