diff --git a/src/test/func/malloc/malloc.cc b/src/test/func/malloc/malloc.cc
index 8df3455..a2d8600 100644
--- a/src/test/func/malloc/malloc.cc
+++ b/src/test/func/malloc/malloc.cc
@@ -106,8 +106,9 @@ int main(int argc, char** argv)
 
   test_posix_memalign(0, 0, EINVAL, true);
   test_posix_memalign((size_t)-1, 0, EINVAL, true);
+  test_posix_memalign(OS_PAGE_SIZE, sizeof(uintptr_t) / 2, EINVAL, true);
 
-  for (size_t align = sizeof(size_t); align <= SUPERSLAB_SIZE; align <<= 1)
+  for (size_t align = sizeof(uintptr_t); align <= SUPERSLAB_SIZE; align <<= 1)
   {
     for (snmalloc::sizeclass_t sc = 0; sc < NUM_SIZECLASSES; sc++)
     {