diff -ur coinmp.org/Clp/src/ClpMessage.cpp coinmp/Clp/src/ClpMessage.cpp
--- coinmp.org/Clp/src/ClpMessage.cpp	2025-07-25 11:26:58.104048978 +0200
+++ coinmp/Clp/src/ClpMessage.cpp	2025-07-25 11:29:02.781194570 +0200
@@ -12,7 +12,7 @@
      char detail;
      const char * message;
 } Clp_message;
-static Clp_message clp_us_english[] = {
+static const Clp_message clp_us_english[] = {
      {CLP_SIMPLEX_FINISHED, 0, 1, "Optimal - objective value %g"},
      {CLP_SIMPLEX_INFEASIBLE, 1, 1, "Primal infeasible - objective value %g"},
      {CLP_SIMPLEX_UNBOUNDED, 2, 1, "Dual infeasible - objective value %g"},
@@ -116,7 +116,7 @@
      {CLP_GENERAL_WARNING, 3006, 1, "%s"},
      {CLP_DUMMY_END, 999999, 0, ""}
 };
-static Clp_message uk_english[] = {
+static const Clp_message uk_english[] = {
      {
           CLP_SIMPLEX_FINISHED, 0, 1, "Optimal - objective value %g,\
  okay CLP can solve some LPs but you really need Xpress from Dash Associates :-)"
@@ -130,7 +130,7 @@
      language_ = language;
      strcpy(source_, "Clp");
      class_ = 1; //solver
-     Clp_message * message = clp_us_english;
+     const Clp_message * message = clp_us_english;
 
      while (message->internalNumber != CLP_DUMMY_END) {
           CoinOneMessage oneMessage(message->externalNumber, message->detail,