diff --git a/changes/bug6377 b/changes/bug6377
new file mode 100644
index 0000000000..a3a3672783
--- /dev/null
+++ b/changes/bug6377
@@ -0,0 +1,4 @@
+ o Testing:
+   - Make it possible to set the TestingTorNetwork configuration
+     option using AlternateDirAuthority and AlternateBridgeAuthority
+     as an alternative to setting DirServer.
diff --git a/src/or/config.c b/src/or/config.c
index d90e0fc996..f5b5c8fb58 100644
--- a/src/or/config.c
+++ b/src/or/config.c
@@ -4091,9 +4091,13 @@ options_validate(or_options_t *old_options, or_options_t *options,
     });
   }
 
-  if (options->TestingTorNetwork && !options->DirServers) {
+  if (options->TestingTorNetwork &&
+      !(options->DirServers ||
+        (options->AlternateDirAuthority &&
+         options->AlternateBridgeAuthority))) {
     REJECT("TestingTorNetwork may only be configured in combination with "
-           "a non-default set of DirServers.");
+           "a non-default set of DirServer or both of AlternateDirAuthority "
+           "and AlternateBridgeAuthority configured.");
   }
 
   if (options->AllowSingleHopExits && !options->DirServers) {