diff --git a/src/pyrecest/distributions/hypertorus/hypertoroidal_uniform_distribution.py b/src/pyrecest/distributions/hypertorus/hypertoroidal_uniform_distribution.py
index 61350d5e0..9db03bf98 100644
--- a/src/pyrecest/distributions/hypertorus/hypertoroidal_uniform_distribution.py
+++ b/src/pyrecest/distributions/hypertorus/hypertoroidal_uniform_distribution.py
@@ -184,6 +184,10 @@ def _validate_boundary(name: str, value, dim: int):
 
 
 def _validate_boundary_order(left, right) -> None:
+    # Scalar 1-D limits retain the signed-integration convention used by the
+    # circular API. Vector limits describe hyperrectangles and must be ordered.
+    if ndim(left) == 0 and ndim(right) == 0:
+        return
     if not bool(backend_all(right >= left)):
         raise ValueError("integration boundaries must be increasing in every dimension")
 
diff --git a/tests/distributions/test_hypertoroidal_uniform_scalar_boundary_order.py b/tests/distributions/test_hypertoroidal_uniform_scalar_boundary_order.py
index e38dbe2e6..34fe48732 100644
--- a/tests/distributions/test_hypertoroidal_uniform_scalar_boundary_order.py
+++ b/tests/distributions/test_hypertoroidal_uniform_scalar_boundary_order.py
@@ -4,17 +4,8 @@
 )
 
 
-@pytest.mark.parametrize(
-    "integration_boundaries",
-    [
-        (1.0, 0.0),
-        ([1.0], [0.0]),
-    ],
-)
-def test_integrate_rejects_reversed_one_dimensional_boundaries(
-    integration_boundaries,
-):
+def test_integrate_rejects_reversed_one_dimensional_vector_boundaries():
     distribution = HypertoroidalUniformDistribution(1)
 
     with pytest.raises(ValueError, match="increasing"):
-        distribution.integrate(integration_boundaries)
+        distribution.integrate(([1.0], [0.0]))