diff --git a/python_module/megengine/functional/nn.py b/python_module/megengine/functional/nn.py
index 5dc27f0dbb0aa801987cb3e38b3ae5a73e151aa4..e579bea2fe770271dd680cba1a52f0da04a3d071 100644
--- a/python_module/megengine/functional/nn.py
+++ b/python_module/megengine/functional/nn.py
@@ -44,7 +44,7 @@ def linear(inp: Tensor, weight: Tensor, bias: Optional[Tensor] = None) -> Tensor
     ret = mgb.opr.matrix_mul(inp, weight, transposeB=True)
     ret = ret.reshape(orig_shape[:-1], weight.shape[0])
     if bias is not None:
-        ret += bias
+        ret += bias.reshape(1, bias.shape[0])
     return ret