diff --git a/build-constraints.yaml b/build-constraints.yaml
index 38b4ded1..7dfb7942 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5136,7 +5136,7 @@ expected-test-failures:
     - http-client-tls # https://github.com/snoyberg/http-client/issues/360
     - http-link-header # https://github.com/myfreeweb/http-link-header/issues/7
     - mmark # https://github.com/commercialhaskell/stackage/issues/3906#issuecomment-413061849
-    # rando # https://github.com/commercialhaskell/stackage/issues/4249
+    - rando # https://github.com/commercialhaskell/stackage/issues/4249
     - systemd # https://github.com/erebe/systemd/issues/3
     - unicode-show # https://github.com/nushio3/unicode-show/issues/2
     - wreq
@@ -5219,7 +5219,7 @@ expected-test-failures:
     - heap
 
     # https://github.com/commercialhaskell/stackage/issues/4289
-    - Diff
+    # Diff
 
     # https://github.com/commercialhaskell/stackage/issues/4294
     - asif