diff --git a/df_datalink_sp/src/networking/link_layer/link_layer_types.h b/df_datalink_sp/src/networking/link_layer/link_layer_types.h
index 571f042..ac0a182 100644
--- a/df_datalink_sp/src/networking/link_layer/link_layer_types.h
+++ b/df_datalink_sp/src/networking/link_layer/link_layer_types.h
@@ -193,8 +193,8 @@ typedef struct
 	bool isAckPending;	// 2way acq done.
 	uint8_t scanCnt;
 	uint8_t beamNo;
-	uint32_t advTimeout;
-	uint32_t cfmTimeout;
+	uint8_t advTimeout;
+	uint8_t cfmTimeout;
 	SCAN_STAGE scanStage;  // only for member node
 } L2_SCAN_FSM;