diff --git a/pkgs/build-support/rust/build-rust-crate/test/default.nix b/pkgs/build-support/rust/build-rust-crate/test/default.nix
index d5c56858c6a4..ca598655d463 100644
--- a/pkgs/build-support/rust/build-rust-crate/test/default.nix
+++ b/pkgs/build-support/rust/build-rust-crate/test/default.nix
@@ -488,6 +488,8 @@ rec {
                 fn feature_not_visible() {
                   assert!(std::env::var("CARGO_FEATURE_SOME_FEATURE").is_err());
                   assert!(option_env!("CARGO_FEATURE_SOME_FEATURE").is_none());
+                  assert!(std::env::var("CARGO_FEATURE_ANOTHER_FEATURE").is_err());
+                  assert!(option_env!("CARGO_FEATURE_ANOTHER_FEATURE").is_none());
                 }
                 fn main() {}
               '')
@@ -495,6 +497,8 @@ rec {
                 fn main() {
                   assert!(std::env::var("CARGO_FEATURE_SOME_FEATURE").is_ok());
                   assert!(option_env!("CARGO_FEATURE_SOME_FEATURE").is_none());
+                  assert!(std::env::var("CARGO_FEATURE_ANOTHER_FEATURE").is_err());
+                  assert!(option_env!("CARGO_FEATURE_ANOTHER_FEATURE").is_none());
                 }
               '')
             ];