diff --git a/sys/dev/iwn/if_iwn.c b/sys/dev/iwn/if_iwn.c
index 67ec1865d9eb..a3efc32a0699 100644
--- a/sys/dev/iwn/if_iwn.c
+++ b/sys/dev/iwn/if_iwn.c
@@ -5372,7 +5372,7 @@ iwn_send_advanced_btcoex(struct iwn_softc *sc)
 		return error;
 
 	/* Force BT state machine change. */
-	memset(&btprot, 0, sizeof btprio);
+	memset(&btprot, 0, sizeof btprot);
 	btprot.open = 1;
 	btprot.type = 1;
 	error = iwn_cmd(sc, IWN_CMD_BT_COEX_PROT, &btprot, sizeof(btprot), 1);