diff --git a/nixos/tests/hound.nix b/nixos/tests/hound.nix
index 27c65abdf27..b8b10022bd9 100644
--- a/nixos/tests/hound.nix
+++ b/nixos/tests/hound.nix
@@ -53,7 +53,7 @@ import ./make-test-python.nix ({ pkgs, ... } : {
     machine.wait_for_unit("hound.service")
     machine.wait_for_open_port(6080)
     machine.wait_until_succeeds(
-        "curl http://127.0.0.1:6080/api/v1/search\?stats\=fosho\&repos\=\*\&rng=%3A20\&q\=hi\&files\=\&i=nope | grep 'Filename' | grep 'hello'"
+        "curl -f http://127.0.0.1:6080/api/v1/search\?stats\=fosho\&repos\=\*\&rng=%3A20\&q\=hi\&files\=\&i=nope | grep 'Filename' | grep 'hello'"
     )
   '';
 })