diff --git a/firmware/common/hackrf_core.h b/firmware/common/hackrf_core.h
index e19829d6..bad03a40 100644
--- a/firmware/common/hackrf_core.h
+++ b/firmware/common/hackrf_core.h
@@ -347,7 +347,7 @@ typedef enum {
 	TRANSCEIVER_MODE_RX = 1,
 	TRANSCEIVER_MODE_TX = 2,
 	TRANSCEIVER_MODE_SS = 3,
-    TRANSCEIVER_MODE_CPLD_UPDATE = 4
+	TRANSCEIVER_MODE_CPLD_UPDATE = 4
 } transceiver_mode_t;
 
 void delay(uint32_t duration);