diff --git a/src/macsniff.h b/src/macsniff.h
index fb00cd6d..9fa2496b 100644
--- a/src/macsniff.h
+++ b/src/macsniff.h
@@ -19,6 +19,8 @@ typedef struct {
     uint8_t payload[0]; /* network data ended with 4 bytes csum (CRC32) */
 } wifi_ieee80211_packet_t;
 
+extern uint16_t currentScanDevice;
+
 uint16_t salt_reset(void);
 void BLECount();
 void wifi_sniffer_init(void);