diff --git a/python/triton/ops/blocksparse/matmul.py b/python/triton/ops/blocksparse/matmul.py
index 8a020e5c2..49497777a 100644
--- a/python/triton/ops/blocksparse/matmul.py
+++ b/python/triton/ops/blocksparse/matmul.py
@@ -107,6 +107,7 @@ def sdd_matmul(a, b, trans_a, trans_b, trans_c, spdims, block, lut, widths, out
 
 def sdd_lut(layout, block, device):
     lut = layout.nonzero(as_tuple=False).to(device).int()
+    lut = lut.contiguous()
     return lut, None
 
 # -----------------------------