diff --git a/app/buck2_test/Cargo.toml b/app/buck2_test/Cargo.toml
index a5b78e7bb333d..e9c26edf277f6 100644
--- a/app/buck2_test/Cargo.toml
+++ b/app/buck2_test/Cargo.toml
@@ -54,3 +54,6 @@ libc = { workspace = true }
 
 [dev-dependencies]
 maplit = { workspace = true }
+
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ["cfg(fbcode_build)"] }