diff --git a/include/ucore/ucore_salloc.h b/include/ucore/ucore_salloc.h
index f9a00f6..4632316 100644
--- a/include/ucore/ucore_salloc.h
+++ b/include/ucore/ucore_salloc.h
@@ -18,6 +18,13 @@ extern "C" {
  * Once a particular SAlloc has given out all memory in a chunk, a new chunk
  * is allocated again, using the underlying malloc().
  *
+ * *Note* that salloc hands back densely packed memory. Allocating objects
+ * of different sizes from the same salloc is not recommended. e.g.
+ * first allocating space for a short, and then for a pointer might
+ * give back a pointer that is not suitable aligned. 
+ * The first piece of memory handed back are suitable aligned for any type though,
+ * so allocating only pointers, or only shorts (or only a specific struct etc.)
+ * will give properly alignment to all objects from a SAlloc.
  */
 
 /** Opaque handle to a SAlloc */