diff --git a/test/test_array.py b/test/test_array.py
index 5f54cfa3ed636f65cf9859e4ac7e347ae02f64b6..3e74bcf0e2bc3c5c56ebfbb971164d89fcc49a35 100644
--- a/test/test_array.py
+++ b/test/test_array.py
@@ -581,7 +581,7 @@ def test_bitwise(ctx_factory):
 
 @pytest.mark.parametrize("rng_class",
         [RanluxGenerator, PhiloxGenerator, ThreefryGenerator])
-@pytest.mark.parametrize("ary_size", [300, 301, 302, 303, 10007])
+@pytest.mark.parametrize("ary_size", [300, 301, 302, 303, 10007, 1000000])
 def test_random_float_in_range(ctx_factory, rng_class, ary_size, plot_hist=False):
     context = ctx_factory()
     queue = cl.CommandQueue(context)
@@ -606,16 +606,22 @@ def test_random_float_in_range(ctx_factory, rng_class, ary_size, plot_hist=False
             pt.hist(ran.get(), 30)
             pt.show()
 
-        assert (0 < ran.get()).all()
-        assert (ran.get() < 1).all()
+        assert (0 <= ran.get()).all()
+        assert (ran.get() <= 1).all()
 
         if rng_class is RanluxGenerator:
             gen.synchronize(queue)
 
         ran = cl_array.zeros(queue, ary_size, dtype)
         gen.fill_uniform(ran, a=4, b=7)
-        assert (4 < ran.get()).all()
-        assert (ran.get() < 7).all()
+        ran_host = ran.get()
+
+        for cond in [4 <= ran_host,  ran_host <= 7]:
+            good = cond.all()
+            if not good:
+                print(np.where(~cond))
+                print(ran_host[~cond])
+            assert good
 
         ran = gen.normal(queue, ary_size, dtype, mu=10, sigma=3)