diff --git a/python/sglang/srt/layers/communicator.py b/python/sglang/srt/layers/communicator.py
index 0115a189c..ebd0d3bea 100644
--- a/python/sglang/srt/layers/communicator.py
+++ b/python/sglang/srt/layers/communicator.py
@@ -88,10 +88,9 @@ FUSE_ALLREDUCE_MAX_BATCH_SIZE = 2048
 
 def apply_flashinfer_allreduce_fusion(batch_size: int):
     return (
-        # TODO: flashinfer 0.6.1 caused performance regression on sm100 for allreduce fusion
-        # Temporarily disable it on sm100. Add it back after its performance is restored.
+        # NOTE: flashinfer 0.6.1 caused performance regression on sm100 for allreduce fusion
         # Ref: https://github.com/sgl-project/sglang/issues/17237
-        _is_sm90_supported
+        (_is_sm90_supported or _is_sm100_supported)
         and _is_flashinfer_available
         and batch_size > 0
         and batch_size <= FUSE_ALLREDUCE_MAX_BATCH_SIZE