diff --git a/src/include/lwip/init.h b/src/include/lwip/init.h
index 3429e78a..ba5b1cf3 100644
--- a/src/include/lwip/init.h
+++ b/src/include/lwip/init.h
@@ -39,17 +39,24 @@ extern "C" {
 #endif
 
 /** X.x.x: Major version of the stack */
-#define LWIP_VERSION_MAJOR      1
+#define LWIP_VERSION_MAJOR      1U
 /** x.X.x: Minor version of the stack */
-#define LWIP_VERSION_MINOR      3
+#define LWIP_VERSION_MINOR      3U
 /** x.x.X: Revision of the stack */
-#define LWIP_VERSION_REVISION   1
-/** For release candidates, this is set to 0..255
-  * For official releases, this is set to 255 (i.e. LWIP_RC_RELEASE) */
-#define LWIP_VERSION_RC         0
+#define LWIP_VERSION_REVISION   2U
+/** For release candidates, this is set to 1..255
+  * For official releases, this is set to 255 (LWIP_RC_RELEASE)
+  * For development versions (CVS), this is set to 0 (LWIP_RC_DEVELOPMENT) */
+#define LWIP_VERSION_RC         0U
 
 /** LWIP_VERSION_RC is set to LWIP_RC_RELEASE for official releases */
-#define LWIP_RC_RELEASE    255
+#define LWIP_RC_RELEASE         255U
+/** LWIP_VERSION_RC is set to LWIP_RC_DEVELOPMENT for CVS versions */
+#define LWIP_RC_DEVELOPMENT     0U
+
+#define LWIP_VERSION_IS_RELEASE     (LWIP_VERSION_RC == LWIP_RC_RELEASE)
+#define LWIP_VERSION_IS_DEVELOPMENT (LWIP_VERSION_RC == LWIP_RC_DEVELOPMENT)
+#define LWIP_VERSION_IS_RC          ((LWIP_VERSION_RC != LWIP_RC_RELEASE) && (LWIP_VERSION_RC != LWIP_RC_DEVELOPMENT))
 
 /** Provides the version of the stack */
 #define LWIP_VERSION   (LWIP_VERSION_MAJOR << 24   | LWIP_VERSION_MINOR << 16 |