diff --git a/test/default/randombytes.c b/test/default/randombytes.c
index d4127145..551afaf4 100644
--- a/test/default/randombytes.c
+++ b/test/default/randombytes.c
@@ -139,6 +139,7 @@ impl_tests(void)
     impl.uniform = randombytes_uniform_impl;
     randombytes_close();
     randombytes_set_implementation(&impl);
+    assert(randombytes_uniform(1) == 1);
     assert(randombytes_uniform(v) == v);
     assert(randombytes_uniform(v) == v);
     assert(randombytes_uniform(v) == v);