diff --git a/vllm/_custom_ops.py b/vllm/_custom_ops.py
index c55f5b923..55e50e4ec 100644
--- a/vllm/_custom_ops.py
+++ b/vllm/_custom_ops.py
@@ -56,11 +56,11 @@ def create_fp4_scale_tensor(
         rounded_m = round_up(m, 128)
         scale_n = n // block_size
         rounded_n = round_up(scale_n, 4)
-        return torch.empty(
+        return torch.zeros(
             (rounded_m, rounded_n // 4), device=device, dtype=torch.int32
         )
     else:
-        return torch.empty((m, n // block_size), device=device, dtype=torch.uint8)
+        return torch.zeros((m, n // block_size), device=device, dtype=torch.uint8)
 
 
 def create_fp4_output_tensors(