diff --git a/tests/mastodon-garage.nix b/tests/mastodon-garage.nix
index c109ea1..672b70f 100644
--- a/tests/mastodon-garage.nix
+++ b/tests/mastodon-garage.nix
@@ -57,7 +57,7 @@ pkgs.nixosTest {
     };
   };
 
-  testScript = ''
+  testScript = { nodes, ... }: ''
     import re
     import time
 
@@ -95,8 +95,7 @@ pkgs.nixosTest {
       server.succeed("toot post --media $POST_MEDIA")
 
     with subtest("access garage"):
-      ## REVIEW: could we grab `config.fediversity.internal.garage.api.url` here in some way?
-      server.succeed("mc alias set garage http://s3.garage.localhost:3900 --api s3v4 --path off $AWS_ACCESS_KEY_ID $AWS_SECRET_ACCESS_KEY")
+      server.succeed("mc alias set garage ${nodes.server.fediversity.internal.garage.api.url} --api s3v4 --path off $AWS_ACCESS_KEY_ID $AWS_SECRET_ACCESS_KEY")
       server.succeed("mc ls garage/mastodon")
 
     with subtest("access image in garage"):
@@ -122,7 +121,7 @@ pkgs.nixosTest {
         raise Exception("mastodon did not send a content security policy header")
       csp = csp_match.group(1)
       # the img-src content security policy should include the garage server
-      ## REVIEW: could we grab `config.fediversity.internal.garage.web.url` here in some way?
+      ## TODO: use `nodes.server.fediversity.internal.garage.api.url` same as above, but beware of escaping the regex.
       garage_csp = re.match(".*; img-src[^;]*web\.garage\.localhost:3902.*", csp)
       if garage_csp is None:
         raise Exception("Mastodon's content security policy does not include garage server. image will not be displayed properly on mastodon.")
diff --git a/tests/pixelfed-garage.nix b/tests/pixelfed-garage.nix
index 9bf2944..b25bc66 100644
--- a/tests/pixelfed-garage.nix
+++ b/tests/pixelfed-garage.nix
@@ -160,7 +160,7 @@ pkgs.nixosTest {
     };
   };
 
-  testScript = ''
+  testScript = { nodes, ... }: ''
     import re
 
     server.start()
@@ -186,15 +186,14 @@ pkgs.nixosTest {
         raise Exception("cannot detect the uploaded image on pixelfed page.")
 
     with subtest("access garage"):
-      ## REVIEW: could we grab `config.fediversity.internal.garage.api.url` here in some way?
-      server.succeed("mc alias set garage http://s3.garage.localhost:3900 --api s3v4 --path off $AWS_ACCESS_KEY_ID $AWS_SECRET_ACCESS_KEY")
+      server.succeed("mc alias set garage ${nodes.server.fediversity.internal.garage.api.url} --api s3v4 --path off $AWS_ACCESS_KEY_ID $AWS_SECRET_ACCESS_KEY")
       server.succeed("mc ls garage/pixelfed")
 
     with subtest("access image in garage"):
       image = server.succeed("mc find garage --regex '\\.png' --ignore '*_thumb.png'")
       image = image.rstrip()
       if image == "":
-        raise Exception("image posted to mastodon did not get stored in garage")
+        raise Exception("image posted to Pixelfed did not get stored in garage")
       server.succeed(f"mc cat {image} >/garage-image.png")
       garage_image_hash = server.succeed("identify -quiet -format '%#' /garage-image.png")
       image_hash = server.succeed("identify -quiet -format '%#' $POST_MEDIA")
@@ -203,8 +202,7 @@ pkgs.nixosTest {
 
     with subtest("Check that image comes from garage"):
       src = server.succeed("su - selenium -c 'selenium-script-get-src ${email} ${password}'")
-      ## REVIEW: could we grab `config.fediversity.internal.garage.web.url` here in some way?
-      if not src.startswith("http://pixelfed.web.garage.localhost:3902/"):
+      if not src.startswith("${nodes.server.fediversity.internal.garage.web.urlFor "pixelfed"}"):
         raise Exception("image does not come from garage")
   '';
 }