diff --git a/uppsrc/Core/sheap.cpp b/uppsrc/Core/sheap.cpp
index c0ad2326b..e05ec208f 100644
--- a/uppsrc/Core/sheap.cpp
+++ b/uppsrc/Core/sheap.cpp
@@ -338,7 +338,7 @@ size_t GetMemoryBlockSize_(void *ptr)
 
 #else
 
-#define LTIMING(x)
+#define LTIMING(x) // RTIMING(x)
 
 void *MemoryAlloc(size_t sz)
 {