diff --git a/substrate/utils/frame/benchmarking-cli/build.rs b/substrate/utils/frame/benchmarking-cli/build.rs
index 045859b13b52..06cdb7973abd 100644
--- a/substrate/utils/frame/benchmarking-cli/build.rs
+++ b/substrate/utils/frame/benchmarking-cli/build.rs
@@ -25,11 +25,11 @@ pub fn main() {
 	if let Ok(opt_level) = env::var("OPT_LEVEL") {
 		println!("cargo:rustc-cfg=build_opt_level={:?}", opt_level);
 	} else {
-		println!("cargo:rustc-cfg=build_opt_level={:?}", "uknown");
+		println!("cargo:rustc-cfg=build_opt_level={:?}", "unknown");
 	}
 	if let Ok(profile) = env::var("PROFILE") {
 		println!("cargo:rustc-cfg=build_profile={:?}", profile);
 	} else {
-		println!("cargo:rustc-cfg=build_profile={:?}", "uknown");
+		println!("cargo:rustc-cfg=build_profile={:?}", "unknown");
 	}
 }
diff --git a/substrate/utils/wasm-builder/src/wasm_project.rs b/substrate/utils/wasm-builder/src/wasm_project.rs
index 5bd7f7432314..dcd5e6f1ade9 100644
--- a/substrate/utils/wasm-builder/src/wasm_project.rs
+++ b/substrate/utils/wasm-builder/src/wasm_project.rs
@@ -602,7 +602,7 @@ fn project_enabled_features(
 			// we need to check if the feature is enabled by checking the env variable.
 			*f != "std" &&
 				*f != "default" &&
-				env::var(format!("CARGO_FEATURE_{}", feature_env))
+				env::var(format!("CARGO_FEATURE_{feature_env}"))
 					.map(|v| v == "1")
 					.unwrap_or_default()
 		})