diff --git a/indra/llcommon/llmemory.h b/indra/llcommon/llmemory.h
index 43a77d522..5d73c2e8f 100644
--- a/indra/llcommon/llmemory.h
+++ b/indra/llcommon/llmemory.h
@@ -157,9 +157,9 @@ inline void* ll_aligned_realloc_16(void* ptr, size_t size, size_t old_size) // r
 
 #else // USE_TCMALLOC
 // ll_aligned_foo_16 are not needed with tcmalloc
-#define ll_aligned_malloc_16 malloc
-#define ll_aligned_realloc_16(a,b,c) realloc(a,b)
-#define ll_aligned_free_16 free
+#define ll_aligned_malloc_16 ::malloc
+#define ll_aligned_realloc_16(a,b,c) ::realloc(a,b)
+#define ll_aligned_free_16 ::free
 #endif // USE_TCMALLOC
 
 inline void* ll_aligned_malloc_32(size_t size) // returned hunk MUST be freed with ll_aligned_free_32().