diff --git a/lib/src/main/java/io/ably/lib/realtime/Presence.java b/lib/src/main/java/io/ably/lib/realtime/Presence.java
index 9a719db69..940b1d077 100644
--- a/lib/src/main/java/io/ably/lib/realtime/Presence.java
+++ b/lib/src/main/java/io/ably/lib/realtime/Presence.java
@@ -305,7 +305,7 @@ private void implicitAttachOnSubscribe(CompletionListener completionListener) th
         // RTP6e
         if (!channel.attachOnSubscribeEnabled()) {
             if (completionListener != null) {
-                String errorString = String.format(Locale.ROOT,
+                String errorString = String.format(
                     "Channel %s: attachOnSubscribe=false doesn't expect attach completion callback", channel.name);
                 Log.e(TAG, errorString);
                 ErrorInfo errorInfo = new ErrorInfo(errorString, 400,40000);
diff --git a/lib/src/test/java/io/ably/lib/test/realtime/RealtimePresenceTest.java b/lib/src/test/java/io/ably/lib/test/realtime/RealtimePresenceTest.java
index f7b99c6c3..dee3e57d2 100644
--- a/lib/src/test/java/io/ably/lib/test/realtime/RealtimePresenceTest.java
+++ b/lib/src/test/java/io/ably/lib/test/realtime/RealtimePresenceTest.java
@@ -1692,14 +1692,11 @@ public void presence_subscribe_without_implicit_attach() {
      * @throws AblyException
      */
     @Test
-    public void presence_subscribe_without_implicit_attach_and_completion_listener_throws_exception() {
+    public void presence_subscribe_without_implicit_attach_and_completion_listener_throws_exception() throws AblyException {
         String ablyChannel = "subscribe_" + testParams.name;
-        AblyRealtime ably = null;
-        try {
-            ClientOptions option1 = createOptions(testVars.keys[0].keyStr);
-            option1.clientId = "client1";
-            ably = new AblyRealtime(option1);
-
+        ClientOptions option1 = createOptions(testVars.keys[0].keyStr);
+        option1.clientId = "client1";
+        try (AblyRealtime ably = new AblyRealtime(option1)) {
             /* create a channel and set attachOnSubscribe to false */
             final Channel channel = ably.channels.get(ablyChannel);
             ChannelOptions chOpts = new ChannelOptions();
@@ -1720,9 +1717,6 @@ public void presence_subscribe_without_implicit_attach_and_completion_listener_t
         } catch (AblyException e) {
             e.printStackTrace();
             fail("presence_subscribe_without_implicit_attach: Unexpected exception");
-        } finally {
-            if(ably != null)
-                ably.close();
         }
     }