diff --git a/include/polarssl/config.h b/include/polarssl/config.h
index 110e3b4..e597edf 100644
--- a/include/polarssl/config.h
+++ b/include/polarssl/config.h
@@ -217,6 +217,22 @@
 #define POLARSSL_SELF_TEST
 
 /**
+ * \def POLARSSL_SSL_DEBUG_ALL
+ *
+ * Enable the debug messages in SSL module for all issues.
+ * Debug messages have been disabled in some places to prevent timing
+ * attacks due to (unbalanced) debugging function calls.
+ *
+ * If you need all error reporting you should enable this during debugging,
+ * but remove this for production servers that should log as well.
+ *
+ * Uncomment this macro to report all debug messages on errors introducing
+ * a timing side-channel.
+ *
+#define POLARSSL_SSL_DEBUG_ALL
+ */
+
+/**
  * \def POLARSSL_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
  *
  * If set, the X509 parser will not break-off when parsing an X509 certificate