diff --git a/test/test_loopy.py b/test/test_loopy.py
index ed35251e014d39dfea6a0cf692c9ca3389d431af..8c46e52d7dc0c8a0cb002c6e3094cb58c047bb3c 100644
--- a/test/test_loopy.py
+++ b/test/test_loopy.py
@@ -1942,7 +1942,7 @@ def test_integer_reduction(ctx_factory):
 
     n = 200
     for vtype in [np.int32, np.int64]:
-        var_int = np.random.randint(1000, size=n, dtype=vtype)
+        var_int = np.random.randint(1000, size=n).astype(vtype)
         var_lp = lp.TemporaryVariable('var', initializer=var_int,
                                    read_only=True,
                                    scope=scopes.PRIVATE,