diff --git a/lib/config-symbian.h b/lib/config-symbian.h
index 3a2886bc4..ed9977b27 100644
--- a/lib/config-symbian.h
+++ b/lib/config-symbian.h
@@ -790,3 +790,9 @@
 
 /* the signed version of size_t */
 /* #undef ssize_t */
+
+/* Enabling curl debug mode when building in Symbian debug mode would work */
+/* except that debug mode introduces new exports that must be frozen. */
+#ifdef _DEBUG
+/* #define CURLDEBUG */
+#endif
diff --git a/lib/memdebug.c b/lib/memdebug.c
index 96496b1fa..7742d5e1c 100644
--- a/lib/memdebug.c
+++ b/lib/memdebug.c
@@ -1,4 +1,3 @@
-#ifdef CURLDEBUG
 /***************************************************************************
  *                                  _   _ ____  _
  *  Project                     ___| | | |  _ \| |
@@ -24,6 +23,7 @@
 
 #include "setup.h"
 
+#ifdef CURLDEBUG
 #include <curl/curl.h>
 
 #ifdef HAVE_SYS_SOCKET_H