diff --git a/src/init.cc b/src/init.cc
index 0805935207..512114fd05 100644
--- a/src/init.cc
+++ b/src/init.cc
@@ -1012,7 +1012,8 @@ static ncclResult_t initTransportsRank(struct ncclComm* comm, ncclUniqueId* comm
   // count NETs used by ring
   int nNets = 0;
   int nets[MAXCHANNELS*2];
-  for (int i = 0; i < ringGraph.nChannels; i++) {
+  // do not count NETs in case of single node, i.e comm->topo->nodes[GPU].count == comm->topo->nRanks
+  for (int i = 0; comm->topo->nodes[GPU].count != comm->topo->nRanks && i < ringGraph.nChannels; i++) {
     for (int j = 0; j < 2; j++) {
       int k;
       for (k = 0; k < nNets; k++)
diff --git a/tools/topo_expl/utils.cpp b/tools/topo_expl/utils.cpp
index 3ea1e8a13c..a18cd3e590 100644
--- a/tools/topo_expl/utils.cpp
+++ b/tools/topo_expl/utils.cpp
@@ -604,7 +604,8 @@ ncclResult_t initTransportsRank_3(struct ncclComm* comm, struct allGather3Data_t
   // count NETs used by ring
   int nNets = 0;
   int nets[MAXCHANNELS*2];
-  for (int i = 0; i < ringGraph.nChannels; i++) {
+  // do not count NETs in case of single node, i.e comm->topo->nodes[GPU].count == comm->topo->nRanks
+  for (int i = 0; comm->topo->nodes[GPU].count != comm->topo->nRanks && i < ringGraph.nChannels; i++) {
     for (int j = 0; j < 2; j++) {
       int k;
       for (k = 0; k < nNets; k++)