diff --git a/dendrite/README.md b/dendrite/README.md
index 9c213e3..49e440c 100644
--- a/dendrite/README.md
+++ b/dendrite/README.md
@@ -52,7 +52,7 @@ flyctl deploy
 
 ```shell
 flyctl secrets set "DATABASE_URL=postgresql://user:pass@hostname/database?params=..."
-flyctl secrets set "REGISTRATION_SHARED_SECRET="
+flyctl secrets set "REGISTRATION_SHARED_SECRET=imabad5cret!"
 base64 -w0 matrix_key.pem | flyctl secrets set MATRIX_KEY_PEM=-
 ```