-#define R3964_TO_QVZ 550/10
-#define R3964_TO_ZVZ 220/10
-#define R3964_TO_NO_BUF 400/10
-#define R3964_NO_TX_ROOM 100/10
-#define R3964_TO_RX_PANIC 4000/10
+#define R3964_TO_QVZ ((550)*HZ/1000)
+#define R3964_TO_ZVZ ((220)*HZ/1000)
+#define R3964_TO_NO_BUF ((400)*HZ/1000)
+#define R3964_NO_TX_ROOM ((100)*HZ/1000)
+#define R3964_TO_RX_PANIC ((4000)*HZ/1000)