diff --git a/client.c b/client.c
index 33b3c56..725f70b 100644
--- a/client.c
+++ b/client.c
@@ -408,6 +408,7 @@ void
 unmanage(Client *c) {
 	Client *nc;
 
+	/* The server grab construct avoids race conditions. */
 	XGrabServer(dpy);
 	XSetErrorHandler(xerrordummy);