diff --git a/datalink814_ge/src/time_ctrl/time_ctrl.c b/datalink814_ge/src/time_ctrl/time_ctrl.c
index f20a08d..fe7fb1f 100644
--- a/datalink814_ge/src/time_ctrl/time_ctrl.c
+++ b/datalink814_ge/src/time_ctrl/time_ctrl.c
@@ -194,9 +194,10 @@ void TimeCtrl_TimeAdjust(TIMECTRL_INST *instPtr, const TIME_WORD* tmWord, TIMECT
 		DBG_ERROR("Unsupported adjustment type: %d", type);
 		return;
 	}
-	if(((int32_t)tmWord->frac_part) > COUNTE_FRAC_MAX ) {
-		DBG_ERROR("Invalid fractional value 0x%08X (should <= 0x%08X).\n", 
-			tmWord->frac_part, COUNTE_FRAC_MAX);
+	if(((int32_t)tmWord->frac_part) > TIME_FRAC_MAX 
+		|| ((int32_t)tmWord->frac_part) < -TIME_FRAC_MAX) {
+		DBG_WARNING("Invalid fractional value %d (should between %d~%d)\n", 
+			tmWord->frac_part, -TIME_FRAC_MAX, TIME_FRAC_MAX);
 		return;
 	}
 	TMC_Write(instPtr, TIME_ADJ_FRAC, tmWord->frac_part);