diff --git a/projects/rccl/src/init.cc b/projects/rccl/src/init.cc
index 47df7f06a3..9e4ff00688 100644
--- a/projects/rccl/src/init.cc
+++ b/projects/rccl/src/init.cc
@@ -1338,7 +1338,7 @@ static ncclResult_t initTransportsRank(struct ncclComm* comm, struct ncclComm* p
     allGather3Data[rank].nc = std::max(allGather3Data[rank].nc, 4/ringGraph->nChannels);
   if (ringGraph->nChannels > MAXCHANNELS/2)
     allGather3Data[rank].nc = 1;
-  if (IsArchMatch(comm->topo->nodes[GPU].nodes[idx].gpu.gcn, "gfx94") || IsArchMatch(comm->topo->nodes[GPU].nodes[idx].gpu.gcn, "gfx950")) {
+  if (IsArchMatch(comm->topo->nodes[GPU].nodes[idx].gpu.gcn, "gfx94")) {
     // Multi-node MI300A
     int managed = 0;
     CUDACHECK(hipDeviceGetAttribute(&managed, hipDeviceAttributeDirectManagedMemAccessFromHost, 0));
@@ -1355,6 +1355,9 @@ static ncclResult_t initTransportsRank(struct ncclComm* comm, struct ncclComm* p
         allGather3Data[rank].nc = 4;
     }
   }
+  if (IsArchMatch(comm->topo->nodes[GPU].nodes[idx].gpu.gcn, "gfx950")) {
+    allGather3Data[rank].nc = 4;
+  }
 
   allGather3Data[rank].pivotA2AEnabled = comm->topo->pivotA2AEnabled && rcclParamPivotAlltoallEnable();
   comm->topo->ll128Enabled =  comm->topo->ll128Enabled || rcclParamLL128ForceEnable();