diff --git a/Cargo.toml b/Cargo.toml
index 6eceed33..31bb9e0d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -82,7 +82,7 @@ serde = { version = "1.0.60", optional = true, default-features = false }
 critical-section = { version = "1", optional = true }
 
 [dev-dependencies]
-test-helper = { path = "tests/helper", features = ["std"] }
+test-helper = { path = "tests/helper", features = ["std", "critical-section"] }
 
 build-context = "0.1"
 crossbeam-utils = "=0.8.16" # The latest crossbeam-utils requires Rust 1.60
diff --git a/tests/helper/Cargo.toml b/tests/helper/Cargo.toml
index cca2b50a..42ca610e 100644
--- a/tests/helper/Cargo.toml
+++ b/tests/helper/Cargo.toml
@@ -11,7 +11,7 @@ doc = false
 test = false
 
 [features]
-std = ["critical-section", "fs-err", "libc", "windows-sys"]
+std = ["fs-err", "libc", "windows-sys"]
 
 [dependencies]
 critical-section = { version = "1", optional = true, features = ["restore-state-bool"] }
diff --git a/tests/helper/src/lib.rs b/tests/helper/src/lib.rs
index be29199b..e9640e03 100644
--- a/tests/helper/src/lib.rs
+++ b/tests/helper/src/lib.rs
@@ -24,6 +24,7 @@ pub mod sys;
 #[cfg(feature = "std")]
 pub mod cpuinfo;
 #[cfg(feature = "std")]
+#[cfg(feature = "critical-section")]
 mod critical_section_std;
 #[cfg(feature = "std")]
 pub mod once_lock;