diff --git a/sway/behaviours b/sway/behaviours
index d56f4cae6..9eb46a2fb 100644
--- a/sway/behaviours
+++ b/sway/behaviours
@@ -10,7 +10,7 @@ assign [class="UXTerm"] grave
 assign [app_id="thunderbird"] 2
 assign [class="Chromium"] 3
 assign [class="Linphone"] 5
-assign [app_id="firefox"] 7
+assign [class="firefox"] 7
 assign [app_id="com.github.gittyup.Gittyup"] 9
 
 # Don't use VNC viewer anymore. I've defaulted to running virt-manager on this workspace because it's similar