diff --git a/Development-Quickstart.md b/Development-Quickstart.md
index f2a0f17..76cedd9 100644
--- a/Development-Quickstart.md
+++ b/Development-Quickstart.md
@@ -68,6 +68,8 @@ You should see the emails listed in your web browser, as well as a bunch of Inbu
 
 After you make changes to the backend, kill the inbucket process and repeat the steps above to test it.
 
+_Note:_ The integration tests start an Inbucket server using the default ports.  The test will fail if you already have an Inbucket (or another) process holding those ports.
+
 # Frontend development
 
 Frontend development still requires a running backend, so follow the _Terminal 1_ steps in the backend section before proceeding.