diff --git a/sys/dev/mwl/if_mwl.c b/sys/dev/mwl/if_mwl.c
index 2bffff0bf8b..95655aa33e2 100644
--- a/sys/dev/mwl/if_mwl.c
+++ b/sys/dev/mwl/if_mwl.c
@@ -2529,7 +2529,6 @@ mwl_ext_free(struct mbuf *m)
 	/*
 	 * If we were previously blocked by a lack of rx dma buffers
 	 * check if we now have enough to restart rx interrupt handling.
-	 * NB: we know we are called at splvm which is above splnet.
 	 */
 	if (sc->sc_rxblocked && sc->sc_nrxfree > mwl_rxdmalow) {
 		sc->sc_rxblocked = 0;