diff --git a/detect.py b/detect.py
index dbf32028..64a7867d 100644
--- a/detect.py
+++ b/detect.py
@@ -45,11 +45,12 @@ def detect(save_img=False):
     if ONNX_EXPORT:
         model.fuse()
         img = torch.zeros((1, 3) + img_size)  # (1, 3, 320, 192)
-        torch.onnx.export(model, img, 'weights/export.onnx', verbose=False, opset_version=11)
+        f = opt.weights.replace(opt.weights.split('.')[-1], 'onnx')  # *.onnx filename
+        torch.onnx.export(model, img, f, verbose=False, opset_version=11)
 
         # Validate exported model
         import onnx
-        model = onnx.load('weights/export.onnx')  # Load the ONNX model
+        model = onnx.load(f)  # Load the ONNX model
         onnx.checker.check_model(model)  # Check that the IR is well formed
         print(onnx.helper.printable_graph(model.graph))  # Print a human readable representation of the graph
         return