diff --git a/unyt/__init__.py b/unyt/__init__.py

index a83476a..8664f5e 100644

--- a/unyt/__init__.py

+++ b/unyt/__init__.py

@@ -94,7 +94,10 @@ from unyt.array import (  # NOQA: F401

 from unyt.unit_object import Unit, define_unit  # NOQA: F401

 from unyt.unit_registry import UnitRegistry  # NOQA: F401

 from unyt.unit_systems import UnitSystem  # NOQA: F401

-from unyt.testing import assert_allclose_units  # NOQA: F401

+try:

+    from unyt.testing import assert_allclose_units  # NOQA: F401

+except ImportError:

+    pass

 from unyt.dimensions import accepts, returns  # NOQA: F401

 try: