diff --git a/df_datalink_sp/src/system_monitor.h b/df_datalink_sp/src/system_monitor.h
index e60fbf8..ae8743b 100644
--- a/df_datalink_sp/src/system_monitor.h
+++ b/df_datalink_sp/src/system_monitor.h
@@ -103,7 +103,7 @@ typedef struct
 	// -- Signal processor status
 	uint16_t spVolt;
 	uint16_t spTemp;
-	uint16_t chipSt;
+	uint8_t chipSt;
 	// -- Antenna status
 	uint8_t antVolt;
 	uint8_t antTemp;