diff --git a/executables/nr-gnb.c b/executables/nr-gnb.c
index 1fa3478d75..9df218fe1b 100644
--- a/executables/nr-gnb.c
+++ b/executables/nr-gnb.c
@@ -115,10 +115,10 @@ static void tx_func(void *param)
   int slot_tx = info->slot;
   int frame_rx = info->frame_rx;
   int slot_rx = info->slot_rx;
-  int absslot_tx = info->timestamp_tx / info->gNB->frame_parms.get_samples_per_slot(slot_tx, &info->gNB->frame_parms);
-  int absslot_rx = absslot_tx - info->gNB->RU_list[0]->sl_ahead;
+  int64_t absslot_tx = info->timestamp_tx / info->gNB->frame_parms.get_samples_per_slot(slot_tx, &info->gNB->frame_parms);
+  int64_t absslot_rx = absslot_tx - info->gNB->RU_list[0]->sl_ahead;
   if (absslot_rx < 0) {
-    LOG_W(NR_PHY, "Slot ahead %d is larger than absslot_tx %d. Cannot start TX yet.\n", info->gNB->RU_list[0]->sl_ahead, absslot_tx);
+    LOG_W(NR_PHY, "Slot ahead %d is larger than absslot_tx %ld. Cannot start TX yet.\n", info->gNB->RU_list[0]->sl_ahead, absslot_tx);
     return;
   }
   LOG_D(NR_PHY, "%d.%d running tx_func\n", frame_tx, slot_tx);
@@ -218,8 +218,8 @@ void rx_func(void *param)
   for (; i < gNB->frame_parms.slots_per_subframe / 2; i++)
     cumul_samples += gNB->frame_parms.get_samples_per_slot(i, &gNB->frame_parms);
   int samples = cumul_samples / i;
-  int absslot_tx = info->timestamp_tx / samples;
-  int absslot_rx = absslot_tx - gNB->RU_list[0]->sl_ahead;
+  int64_t absslot_tx = info->timestamp_tx / samples;
+  int64_t absslot_rx = absslot_tx - gNB->RU_list[0]->sl_ahead;
   int rt_prof_idx = absslot_rx % RT_PROF_DEPTH;
   clock_gettime(CLOCK_MONOTONIC,&info->gNB->rt_L1_profiling.start_L1_RX[rt_prof_idx]);
   start_meas(&softmodem_stats_rxtx_sf);
diff --git a/executables/nr-ru.c b/executables/nr-ru.c
index 87c4683738..41adc59bf6 100644
--- a/executables/nr-ru.c
+++ b/executables/nr-ru.c
@@ -1108,8 +1108,8 @@ void ru_tx_func(void *param) {
   for (; i < fp->slots_per_subframe / 2; i++)
     cumul_samples += fp->get_samples_per_slot(i, fp);
   int samples = cumul_samples / i;
-  int absslot_tx = info->timestamp_tx / samples;
-  int absslot_rx = absslot_tx - ru->sl_ahead;
+  int64_t absslot_tx = info->timestamp_tx / samples;
+  int64_t absslot_rx = absslot_tx - ru->sl_ahead;
   int rt_prof_idx = absslot_rx % RT_PROF_DEPTH;
   clock_gettime(CLOCK_MONOTONIC,&ru->rt_ru_profiling.start_RU_TX[rt_prof_idx]);
   // do TX front-end processing if needed (precoding and/or IDFTs)
@@ -1335,7 +1335,7 @@ void *ru_thread( void *param ) {
       proc->timestamp_tx += fp->get_samples_per_slot(i % fp->slots_per_frame, fp);
     proc->tti_tx = (proc->tti_rx + ru->sl_ahead) % fp->slots_per_frame;
     proc->frame_tx = proc->tti_rx > proc->tti_tx ? (proc->frame_rx + 1) & 1023 : proc->frame_rx;
-    int absslot_rx = proc->timestamp_rx/fp->get_samples_per_slot(proc->tti_rx,fp);
+    int64_t absslot_rx = proc->timestamp_rx/fp->get_samples_per_slot(proc->tti_rx,fp);
     int rt_prof_idx = absslot_rx % RT_PROF_DEPTH;
     clock_gettime(CLOCK_MONOTONIC,&ru->rt_ru_profiling.return_RU_south_in[rt_prof_idx]);
     LOG_D(PHY,"AFTER fh_south_in - SFN/SL:%d%d RU->proc[RX:%d.%d TX:%d.%d] RC.gNB[0]:[RX:%d%d TX(SFN):%d]\n",
diff --git a/executables/rt_profiling.h b/executables/rt_profiling.h
index 03dcf94517..9b72a7091f 100644
--- a/executables/rt_profiling.h
+++ b/executables/rt_profiling.h
@@ -40,7 +40,7 @@ extern "C"
 // depth of trace in slots
 #define RT_PROF_DEPTH 100
 typedef struct {
-   int absslot_rx[RT_PROF_DEPTH];
+   int64_t absslot_rx[RT_PROF_DEPTH];
    struct timespec return_RU_south_in[RT_PROF_DEPTH];
    struct timespec return_RU_feprx[RT_PROF_DEPTH];
    struct timespec return_RU_prachrx[RT_PROF_DEPTH];
@@ -50,7 +50,7 @@ typedef struct {
 } rt_ru_profiling_t;
 
 typedef struct {
-   int absslot_ux[RT_PROF_DEPTH];
+   int64_t absslot_ux[RT_PROF_DEPTH];
    struct timespec start_L1_RX[RT_PROF_DEPTH];
    struct timespec return_L1_RX[RT_PROF_DEPTH];
    struct timespec start_L1_TX[RT_PROF_DEPTH];