diff --git a/python_module/megengine/random/distribution.py b/python_module/megengine/random/distribution.py
index 6565dd08..55977f9c 100644
--- a/python_module/megengine/random/distribution.py
+++ b/python_module/megengine/random/distribution.py
@@ -93,6 +93,8 @@ def uniform(
          [0.09365904 0.62957656]]
 
     """
+    assert low < high, "Uniform is not defined when low >= high"
+
     comp_node, comp_graph = _use_default_if_none(comp_node, comp_graph)
     seed = _random_seed_generator().__next__()
     return low + (high - low) * mgb.opr.uniform_rng(