diff --git a/lms/envs/common.py b/lms/envs/common.py
index 0859dbc3f2..7dee15a8c8 100644
--- a/lms/envs/common.py
+++ b/lms/envs/common.py
@@ -144,6 +144,10 @@ MITX_FEATURES = {
 
     # Allow use of the hint managment instructor view.
     'ENABLE_HINTER_INSTRUCTOR_VIEW': False,
+
+    # Toggle to enable chat availability (configured on a per-course
+    # basis in Studio)
+    'ENABLE_CHAT': False
 }
 
 # Used for A/B testing