diff --git a/src/core/init.c b/src/core/init.c
index f7de191e..328b3ca5 100644
--- a/src/core/init.c
+++ b/src/core/init.c
@@ -127,13 +127,22 @@
 /* Compile-time checks for deprecated options.
  */
 #ifdef MEMP_NUM_TCPIP_MSG
-  #error MEMP_NUM_TCPIP_MSG option is deprecated. Remove it from your lwipopts.h.
+  #error "MEMP_NUM_TCPIP_MSG option is deprecated. Remove it from your lwipopts.h."
+#endif
+#ifdef MEMP_NUM_API_MSG
+  #error "MEMP_NUM_API_MSG option is deprecated. Remove it from your lwipopts.h."
+#endif
+#ifdef TCP_REXMIT_DEBUG
+  #error "TCP_REXMIT_DEBUG option is deprecated. Remove it from your lwipopts.h."
+#endif
+#ifdef RAW_STATS
+  #error "RAW_STATS option is deprecated. Remove it from your lwipopts.h."
 #endif
 #ifdef ETHARP_QUEUE_FIRST
-  #error ETHARP_QUEUE_FIRST option is deprecated. Remove it from your lwipopts.h.
+  #error "ETHARP_QUEUE_FIRST option is deprecated. Remove it from your lwipopts.h."
 #endif
 #ifdef ETHARP_ALWAYS_INSERT
-  #error ETHARP_ALWAYS_INSERT option is deprecated. Remove it from your lwipopts.h.
+  #error "ETHARP_ALWAYS_INSERT option is deprecated. Remove it from your lwipopts.h."
 #endif
 #if SO_REUSE
 /* I removed the lot since this was an ugly hack. It broke the raw-API.
diff --git a/src/include/lwip/opt.h b/src/include/lwip/opt.h
index 734baa32..a295e4c5 100644
--- a/src/include/lwip/opt.h
+++ b/src/include/lwip/opt.h
@@ -1386,13 +1386,6 @@
 #define TCP_RTO_DEBUG                   LWIP_DBG_OFF
 #endif
 
-/**
- * TCP_REXMIT_DEBUG: Unused.
- */
-#ifndef TCP_REXMIT_DEBUG
-#define TCP_REXMIT_DEBUG                LWIP_DBG_OFF
-#endif
-
 /**
  * TCP_CWND_DEBUG: Enable debugging for TCP congestion window.
  */