diff --git a/crates/specialized/rtx-cfd/src/lib.rs b/crates/specialized/rtx-cfd/src/lib.rs
index 60207d0..4e5743a 100644
--- a/crates/specialized/rtx-cfd/src/lib.rs
+++ b/crates/specialized/rtx-cfd/src/lib.rs
@@ -349,7 +349,8 @@ pub struct BuildInfo {
 }
 
 fn get_features() -> Vec<&'static str> {
-    let features = Vec::new();
+    #[allow(unused_mut)]
+    let mut features = Vec::new();
 
     #[cfg(feature = "cuda")]
     features.push("cuda");