diff --git a/ntp_core.c b/ntp_core.c
index 7113503..214ea72 100644
--- a/ntp_core.c
+++ b/ntp_core.c
@@ -1585,18 +1585,12 @@ NCR_ProcessUnknown
 void
 NCR_SlewTimes(NCR_Instance inst, struct timeval *when, double dfreq, double doffset)
 {
-  struct timeval prev;
   double delta;
-  prev = inst->local_rx;
+
   if (inst->local_rx.tv_sec || inst->local_rx.tv_usec)
     UTI_AdjustTimeval(&inst->local_rx, when, &inst->local_rx, &delta, dfreq, doffset);
-  DEBUG_LOG(LOGF_NtpCore, "rx prev=[%s] new=[%s]",
-      UTI_TimevalToString(&prev), UTI_TimevalToString(&inst->local_rx));
-  prev = inst->local_tx;
   if (inst->local_tx.tv_sec || inst->local_tx.tv_usec)
     UTI_AdjustTimeval(&inst->local_tx, when, &inst->local_tx, &delta, dfreq, doffset);
-  DEBUG_LOG(LOGF_NtpCore, "tx prev=[%s] new=[%s]",
-      UTI_TimevalToString(&prev), UTI_TimevalToString(&inst->local_tx));
 }
 
 /* ================================================== */