diff --git a/datalink814_ge/src/linklayer/linklayer814.h b/datalink814_ge/src/linklayer/linklayer814.h
index 1d86720..831d63d 100644
--- a/datalink814_ge/src/linklayer/linklayer814.h
+++ b/datalink814_ge/src/linklayer/linklayer814.h
@@ -171,7 +171,7 @@ L2_FRAME_TYPE L2_GetNextFrameType(L2_INST* instPtr);
 L2_TOR_TYPE L2_GetNextTor(L2_INST* instPtr);
 
 // Time syncronization
-int32_t L2_TimeAlign(L2_INST* instPtr, uint32_t frameNum, uint32_t slotNum);
+int32_t L2_TimeAlign(L2_INST* instPtr, uint32_t frameNum, uint32_t slotNum, bool relative);
 
 // RTT
 int32_t RTT_Init(L2_RTT_FSM** rttFsmPtr);