diff --git a/projects/rccl/src/collectives/collectives.h b/projects/rccl/src/collectives/collectives.h
index 63fcfd2017..27de1f7540 100644
--- a/projects/rccl/src/collectives/collectives.h
+++ b/projects/rccl/src/collectives/collectives.h
@@ -57,18 +57,12 @@
 DECL_ALL_COLLS
 
 // CHUNKSIZE must be a multiple of SLICESIZE
-//#define ALLREDUCE_SLICESTEPS (NCCL_STEPS/4)
-//#define ALLREDUCE_CHUNKSTEPS (NCCL_STEPS/2)
-//#define ALLGATHER_SLICESTEPS (NCCL_STEPS/4)
-//#define ALLGATHER_CHUNKSTEPS (NCCL_STEPS/2)
-//#define REDUCESCATTER_SLICESTEPS (NCCL_STEPS/4)
-//#define REDUCESCATTER_CHUNKSTEPS (NCCL_STEPS/2)
-#define ALLREDUCE_SLICESTEPS 4
-#define ALLREDUCE_CHUNKSTEPS 4
-#define ALLGATHER_SLICESTEPS 4
-#define ALLGATHER_CHUNKSTEPS 4
-#define REDUCESCATTER_SLICESTEPS 4
-#define REDUCESCATTER_CHUNKSTEPS 4
+#define ALLREDUCE_SLICESTEPS (NCCL_STEPS/4)
+#define ALLREDUCE_CHUNKSTEPS (NCCL_STEPS/2)
+#define ALLGATHER_SLICESTEPS (NCCL_STEPS/4)
+#define ALLGATHER_CHUNKSTEPS (NCCL_STEPS/2)
+#define REDUCESCATTER_SLICESTEPS (NCCL_STEPS/4)
+#define REDUCESCATTER_CHUNKSTEPS (NCCL_STEPS/2)
 #define BROADCAST_SLICESTEPS 1
 #define BROADCAST_CHUNKSTEPS 1
 #define REDUCE_SLICESTEPS 1