diff --git a/tests/transformation/test_conv_lowering.py b/tests/transformation/test_conv_lowering.py
index fe0b58a6adc8278a2be298a6a2c7265c9743a94a..ab545d483321f8c52625b5401828277987bba3a9 100644
--- a/tests/transformation/test_conv_lowering.py
+++ b/tests/transformation/test_conv_lowering.py
@@ -86,7 +86,8 @@ def test_conv_lowering_cnv_w1a1():
 # padding
 @pytest.mark.parametrize("padding", [[0, 0, 0, 0], [1, 1, 1, 1]])
 def test_depthwise_conv_lowering(idt, k, ifm_dim, ifm_ch, stride, padding):
-    odt = wdt = idt
+    wdt = idt
+    odt = DataType.INT32
     ofm_ch = ifm_ch
     ofm_dim = compute_conv_output_dim(ifm_dim, k, stride, pad=padding[0])