diff --git a/ethosu/vela/graph_optimiser.py b/ethosu/vela/graph_optimiser.py
index 00edf83..e468f6d 100644
--- a/ethosu/vela/graph_optimiser.py
+++ b/ethosu/vela/graph_optimiser.py
@@ -209,6 +209,7 @@
         op.inputs[0], op.inputs[2] = op.inputs[2], op.inputs[0]
         op.set_ifm_ofm_shapes()
         op.type = Op.Conv2DBackpropInputSwitchedBias
+        op.ifm.resampling_mode = resampling_mode.TRANSPOSE
 
         # Update strides
         op.attrs.update({"stride_w": 1, "stride_h": 1, "strides": (1, 1, 1, 1)})