1 files changed, 4 insertions, 1 deletions
diff --git a/src/or/dirserv.c b/src/or/dirserv.c
index 468fdbd488..4c5309b3ba 100644
--- a/src/or/dirserv.c
+++ b/src/or/dirserv.c
@@ -720,7 +720,10 @@ dirserv_add_descriptor(routerinfo_t *ri, const char **msg, const char *source)
     log_info(LD_DIRSERV, "Dropping descriptor from %s (source: %s) because "
              "its key did not match an older RSA/Ed25519 keypair",
              router_describe(ri), source);
-    *msg = "Looks like your keypair does not match its older value.";
+    *msg = "Looks like your keypair has changed? This authority previously "
+      "recorded a different RSA identity for this Ed25519 identity (or vice "
+      "versa.) Did you replace or copy some of your key files, but not "
+      "the others?";
     r = ROUTER_AUTHDIR_REJECTS;
     goto fail;
   }