diff --git a/python/tvm/topi/cuda/conv2d.py b/python/tvm/topi/cuda/conv2d.py
index a199534ccb51..8338208dd968 100644
--- a/python/tvm/topi/cuda/conv2d.py
+++ b/python/tvm/topi/cuda/conv2d.py
@@ -86,14 +86,13 @@ def conv2d_cudnn(
     # handle dilation
     stride_h, stride_w = (strides, strides) if isinstance(strides, int) else strides
     dilation_h, dilation_w = (dilation, dilation) if isinstance(dilation, int) else dilation
+    KH_dilated = (KH - 1) * dilation_h + 1
+    KW_dilated = (KW - 1) * dilation_h + 1
 
-    if (
-        isinstance(padding, (list, tuple))
-        and len(padding) == 4
-        and (padding[0] != padding[2] or padding[1] != padding[3])
-    ):
+    pt, pl, pb, pr = get_pad_tuple(padding, (KH_dilated, KW_dilated))
+    if (pt != pb) or (pl != pr):
         raise ValueError("Cudnn doesn't support asymmetric padding.")
-    pt, pl, pb, pr = get_pad_tuple(padding, (KH, KW))
+
     OH = (H + pt + pb - KH) // stride_h + 1
     OW = (W + pl + pr - KW) // stride_w + 1