diff --git a/include/portable.h.in b/include/portable.h.in
index 8bcb058b0d..532d7790db 100644
--- a/include/portable.h.in
+++ b/include/portable.h.in
@@ -975,6 +975,10 @@
 #define LDAP_DEBUG
 #endif
 
+#ifndef OLD_LOGGING
+#  define NEW_LOGGING 1
+#endif
+
 #include "ldap_cdefs.h"
 #include "ldap_features.h"
 
diff --git a/include/portable.nt b/include/portable.nt
index 8e478479da..317a37fbd6 100644
--- a/include/portable.nt
+++ b/include/portable.nt
@@ -741,6 +741,10 @@ typedef signed int ssize_t;
 #define LDAP_DEBUG
 #endif
 
+#ifndef OLD_LOGGING
+#  define NEW_LOGGING 1
+#endif
+
 #include "ldap_cdefs.h"
 #include "ldap_features.h"