diff --git a/src/common/kernel/message.c b/src/common/kernel/message.c
index 879e5c56a..1aba2bfbf 100644
--- a/src/common/kernel/message.c
+++ b/src/common/kernel/message.c
@@ -360,9 +360,8 @@ void
 mistake(const unit * u, struct order * ord, const char *comment, int mtype)
 {
   if (u->faction->no != MONSTER_FACTION) {
-    char * cmt = strdup(comment);
     ADDMSG(&u->faction->msgs, msg_message("mistake",
-      "command error unit region", ord, cmt, u, u->region));
+      "command error unit region", ord, comment, u, u->region));
   }
 }