diff --git a/include/youprop.h b/include/youprop.h
index f1db873a6..fa85420cf 100644
--- a/include/youprop.h
+++ b/include/youprop.h
@@ -118,7 +118,7 @@
 /* Timeout, plus a worn mask */
 #define HDeaf			u.uprops[DEAF].intrinsic
 #define EDeaf			u.uprops[DEAF].extrinsic
-#define Deaf			(HDeaf || HDeaf)
+#define Deaf			(HDeaf || EDeaf)
 
 #define HFumbling		u.uprops[FUMBLING].intrinsic
 #define EFumbling		u.uprops[FUMBLING].extrinsic