diff --git a/haproxy.c b/haproxy.c
index d03ec1f..27b834e 100644
--- a/haproxy.c
+++ b/haproxy.c
@@ -87,8 +87,13 @@
 
 #include "include/appsession.h"
 
-#define HAPROXY_VERSION "1.2.10"
-#define HAPROXY_DATE	"2006/03/19"
+#ifndef HAPROXY_VERSION
+#define HAPROXY_VERSION "1.2.10.1"
+#endif
+
+#ifndef HAPROXY_DATE
+#define HAPROXY_DATE	"2006/03/23"
+#endif
 
 /* this is for libc5 for example */
 #ifndef TCP_NODELAY