diff --git a/sndiod/dev.c b/sndiod/dev.c
index 7b02fae..c3d21bd 100644
--- a/sndiod/dev.c
+++ b/sndiod/dev.c
@@ -1453,7 +1453,7 @@ slot_new(struct dev *d, char *who, struct slotops *ops, void *arg, int mode)
 	}
 
 	/*
-	 * find a xfree controller slot with the same name/unit
+	 * find a free controller slot with the same name/unit
 	 */
 	for (i = 0, s = d->slot; i < DEV_NSLOT; i++, s++) {
 		if (s->ops == NULL &&
@@ -1471,7 +1471,7 @@ slot_new(struct dev *d, char *who, struct slotops *ops, void *arg, int mode)
 	}
 
 	/*
-	 * couldn't find a matching slot, pick oldest xfree slot
+	 * couldn't find a matching slot, pick oldest free slot
 	 * and set its name/unit
 	 */
 	bestser = 0;