diff --git a/firmware/ice40-riscv/icE1usb/misc.c b/firmware/ice40-riscv/icE1usb/misc.c
index 9ceb8c6..6f40fd4 100644
--- a/firmware/ice40-riscv/icE1usb/misc.c
+++ b/firmware/ice40-riscv/icE1usb/misc.c
@@ -18,8 +18,8 @@
 	uint32_t e1_led;
 	uint32_t _rsvd;
 	struct {
-		uint16_t tx;
 		uint16_t rx;
+		uint16_t tx;
 	} e1_tick[2];
 	uint32_t gps;
 	uint32_t time;