diff --git a/crt/aws-c-mqtt b/crt/aws-c-mqtt
index d5c268f70..a2ee9a321 160000
--- a/crt/aws-c-mqtt
+++ b/crt/aws-c-mqtt
@@ -1 +1 @@
-Subproject commit d5c268f70aeccf38e75d3e74ce4eb9629df02e2a
+Subproject commit a2ee9a321fcafa19b0473b88a54e0ae8dde5fddf
diff --git a/test/test_auth.py b/test/test_auth.py
index 108dcaba8..bb229b325 100644
--- a/test/test_auth.py
+++ b/test/test_auth.py
@@ -102,7 +102,7 @@ def test_static_provider_no_session_token(self):
     def test_default_provider(self):
         # Default credentials provider should pick up environment variables.
         with ScopedEnvironmentVariable('AWS_ACCESS_KEY_ID', EXAMPLE_ACCESS_KEY_ID), \
-                ScopedEnvironmentVariable('AWS_SECRET_ACCESS_KEY', EXAMPLE_SECRET_ACCESS_KEY),\
+                ScopedEnvironmentVariable('AWS_SECRET_ACCESS_KEY', EXAMPLE_SECRET_ACCESS_KEY), \
                 ScopedEnvironmentVariable('AWS_SESSION_TOKEN', None):
 
             event_loop_group = awscrt.io.EventLoopGroup()