diff --git a/trunk/src/or/circuit.c b/trunk/src/or/circuit.c
index c4f51e79a4..225c8e37cb 100644
--- a/trunk/src/or/circuit.c
+++ b/trunk/src/or/circuit.c
@@ -926,6 +926,7 @@ void circuit_expire_unused_circuits(void) {
     if(((tmpcirc->timestamp_dirty &&
          tmpcirc->timestamp_dirty + options.NewCircuitPeriod < now) ||
         (options.RunTesting &&
+         tmpcirc->cpath &&
          tmpcirc->timestamp_created + TESTING_CIRCUIT_MAX_AGE < now))
        && !tmpcirc->p_conn
        && !tmpcirc->p_streams