diff --git a/changes/bug26158 b/changes/bug26158
new file mode 100644
index 0000000000..5ae1c30600
--- /dev/null
+++ b/changes/bug26158
@@ -0,0 +1,5 @@
+   o Minor bugfixes (relay):
+     - Relays now correctly block attempts to re-extend to the previous
+       relay by Ed25519 identity. Previously they would warn in this case,
+       but not actually reject the attempt. Fixes bug 26158; bugfix on
+       0.3.0.1-alpha.
diff --git a/src/or/circuitbuild.c b/src/or/circuitbuild.c
index 09102d0c4c..3d1c9c1abf 100644
--- a/src/or/circuitbuild.c
+++ b/src/or/circuitbuild.c
@@ -1264,6 +1264,7 @@ circuit_extend(cell_t *cell, circuit_t *circ)
     log_fn(LOG_PROTOCOL_WARN, LD_PROTOCOL,
            "Client asked me to extend back to the previous hop "
            "(by Ed25519 ID).");
+    return -1;
   }
 
   n_chan = channel_get_for_extend((const char*)ec.node_id,