diff --git a/indra/llcommon/llmemory.h b/indra/llcommon/llmemory.h
index 071a122c9536d4527277dda0e909745e31cc99e9..117268cfe7b15d50977a1426250e0b5d89262c6d 100644
--- a/indra/llcommon/llmemory.h
+++ b/indra/llcommon/llmemory.h
@@ -42,7 +42,7 @@ inline void* ll_aligned_malloc_16(size_t size) // returned hunk MUST be freed wi
 	return malloc(size); // default osx malloc is 16 byte aligned.
 #else
 	void *rtn;
-	if (LL_LIKELY(0 == posix_memalign(&rtn, alignment, 16)))
+	if (LL_LIKELY(0 == posix_memalign(&rtn, 16, size)))
 	{
 		return rtn;
 	}