diff --git a/src/alloc-aligned.c b/src/alloc-aligned.c
index 12706f7f..3a608b83 100644
--- a/src/alloc-aligned.c
+++ b/src/alloc-aligned.c
@@ -51,19 +51,19 @@ static void* mi_heap_malloc_zero_aligned_at(mi_heap_t* const heap, const size_t
   mi_assert(alignment > 0);
   if (mi_unlikely(alignment==0 || !_mi_is_power_of_two(alignment))) { // require power-of-two (see <https://en.cppreference.com/w/c/memory/aligned_alloc>)
     #if MI_DEBUG > 0
-    _mi_error_message(EOVERFLOW, "aligned allocation requires the alignment to be a power-of-two (size %zu, alignment %zu)", size, alignment);
+    _mi_error_message(EOVERFLOW, "aligned allocation requires the alignment to be a power-of-two (size %zu, alignment %zu)\n", size, alignment);
     #endif
     return NULL;
   }
   if (mi_unlikely(alignment > MI_ALIGNED_MAX)) {  // we cannot align at a boundary larger than this (or otherwise we cannot find segment headers)
     #if MI_DEBUG > 0
-    _mi_error_message(EOVERFLOW, "aligned allocation has a maximum alignment of %zu (size %zu, alignment %zu)", MI_ALIGNED_MAX, size, alignment);
+    _mi_error_message(EOVERFLOW, "aligned allocation has a maximum alignment of %zu (size %zu, alignment %zu)\n", MI_ALIGNED_MAX, size, alignment);
     #endif
     return NULL;
   }
   if (mi_unlikely(size > PTRDIFF_MAX)) {          // we don't allocate more than PTRDIFF_MAX (see <https://sourceware.org/ml/libc-announce/2019/msg00001.html>)                                                    
     #if MI_DEBUG > 0
-    _mi_error_message(EOVERFLOW, "aligned allocation request is too large (size %zu, alignment %zu)", size, alignment);
+    _mi_error_message(EOVERFLOW, "aligned allocation request is too large (size %zu, alignment %zu)\n", size, alignment);
     #endif
     return NULL;
   }
diff --git a/src/alloc-posix.c b/src/alloc-posix.c
index efe62817..03171081 100644
--- a/src/alloc-posix.c
+++ b/src/alloc-posix.c
@@ -85,7 +85,7 @@ mi_decl_restrict void* mi_pvalloc(size_t size) mi_attr_noexcept {
 mi_decl_restrict void* mi_aligned_alloc(size_t alignment, size_t size) mi_attr_noexcept {
   if (mi_unlikely((size&(alignment-1)) != 0)) { // C11 requires alignment>0 && integral multiple, see <https://en.cppreference.com/w/c/memory/aligned_alloc>
     #if MI_DEBUG > 0
-    _mi_error_message(EOVERFLOW, "(mi_)aligned_alloc requires the size to be an integral multiple of the alignment (size %zu, alignment %zu)", size, alignment);
+    _mi_error_message(EOVERFLOW, "(mi_)aligned_alloc requires the size to be an integral multiple of the alignment (size %zu, alignment %zu)\n", size, alignment);
     #endif
     return NULL;
   }
diff --git a/test/test-api.c b/test/test-api.c
index 1f810d53..56835d00 100644
--- a/test/test-api.c
+++ b/test/test-api.c
@@ -162,12 +162,18 @@ int main(void) {
     void* p;
     bool ok = true;
     for (int i = 1; i < 8 && ok; i++) {
-      size_t align = 1UL << i;
+      size_t align = (size_t)1 << i;
       p = mi_malloc_aligned(2*align, align);
       ok = (p != NULL && (uintptr_t)(p) % align == 0); mi_free(p);
     }
     result = ok;
   });
+  CHECK_BODY("malloc-aligned7", {
+    void* p = mi_malloc_aligned(1024,MI_ALIGNED_MAX); mi_free(p);
+    });
+  CHECK_BODY("malloc-aligned8", {
+    void* p = mi_malloc_aligned(1024,2*MI_ALIGNED_MAX); mi_free(p);
+  });
   CHECK_BODY("malloc-aligned-at1", {
     void* p = mi_malloc_aligned_at(48,32,0); result = (p != NULL && ((uintptr_t)(p) + 0) % 32 == 0); mi_free(p);
   });