diff --git a/datalink814_ge/src/linklayer/time_sync.c b/datalink814_ge/src/linklayer/time_sync.c
index 697b8e0..1c59dde 100644
--- a/datalink814_ge/src/linklayer/time_sync.c
+++ b/datalink814_ge/src/linklayer/time_sync.c
@@ -60,7 +60,7 @@ static void RTT_GetFrameStart(L2_INST* instPtr, TIME_WORD *tmStamp, L2_TOR_TYPE
 int32_t L2_TimeAlign(L2_INST* instPtr, uint32_t frameNum, uint32_t slotNum){
 	L1_FRAME_TYPE lastRecvdFrame;
 	lastRecvdFrame = Phy_GetLastRecvFrameType(instPtr->config.phyInstPtr);
-	if(lastRecvdFrame != L1_NONE_FRAME){
+	if(lastRecvdFrame == L1_NONE_FRAME){
 		return EIGNORE;
 	}