diff --git a/tools/export_model.py b/tools/export_model.py
index 2443d66ca2a5d81cdb99964bfb88af29ae0c66e2..3d30fa77eac107f38913aa04dcf6c32f59f176ab 100755
--- a/tools/export_model.py
+++ b/tools/export_model.py
@@ -140,6 +140,8 @@ def export_single_model(model,
             infer_shape = [3, 488, 488]
             if arch_config["algorithm"] == "TableMaster":
                 infer_shape = [3, 480, 480]
+            if arch_config["algorithm"] == "SLANet":
+                infer_shape = [3, -1, -1]
         model = to_static(
             model,
             input_spec=[