diff --git a/tridactyl/tridactylrc b/tridactyl/tridactylrc
index 14fbc2e..e19f8d6 100644
--- a/tridactyl/tridactylrc
+++ b/tridactyl/tridactylrc
@@ -26,6 +26,8 @@ unbind <C-b>
 bind h tabprev
 bind l tabnext
 
+js tri.browserBg.runtime.getPlatformInfo().then(os=>{const editorcmd = os.os=="mac" ? "/usr/local/emacsclient" : "emacsclient"; tri.config.set("editorcmd", editorcmd)})
+
 " Better find.
 unbind <C-f>
 bind / fillcmdline find