Index: /trunk/src/VBox/Devices/Network/slirp/misc.c
===================================================================
--- /trunk/src/VBox/Devices/Network/slirp/misc.c	(revision 41806)
+++ /trunk/src/VBox/Devices/Network/slirp/misc.c	(revision 41807)
@@ -103,16 +103,18 @@
 }
 
-# if !defined(VBOX_NAT_MEM_DEBUG) && defined(LOG_ENABLED)
-#  undef LogFlowFunc
-#  define LogFlowFunc(x)
-
-#  undef LogFlowFuncEnter
-#  define LogFlowFuncEnter()
-
-#  undef LogFlowFuncLeave
-#  define LogFlowFuncLeave()
-
-#  undef Log2
-#  define Log2(x)
+# if !defined(VBOX_NAT_MEM_DEBUG)
+#  if defined (LOG_ENABLED)
+#   undef LogFlowFunc
+#   define LogFlowFunc(x)
+
+#   undef LogFlowFuncEnter
+#   define LogFlowFuncEnter()
+
+#   undef LogFlowFuncLeave
+#   define LogFlowFuncLeave()
+
+#   undef Log2
+#   define Log2(x)
+#  endif /* !LOG_ENABLED */
 # else /* VBOX_NAT_MEM_DEBUG */
 # define NAT_MEM_LOG_ENABLED