diff --git a/sway/config b/sway/config
index 575cbbc..ceaefe8 100644
--- a/sway/config
+++ b/sway/config
@@ -22,7 +22,7 @@ set $PIP floating enabled ; sticky enabled ; border pixel 0
 for_window [class="mpv"] $PIP
 for_window [class="pip"] $PIP
 for_window [class="feh"] $PIP
-for_window [app_id="firefox" title="^Picture-in-Picture$"] $PIP
+for_window [class="firefox" title="^Picture-in-Picture$"] $PIP
 for_window [app_id="tty-popup"] focus; $PIP
 for_window [app_id="tty-popup" title="^pass$"] resize set 33 ppt 33 ppt