diff --git a/src/software/resampling/mod.rs b/src/software/resampling/mod.rs
index 94b9fef..5bf3274 100644
--- a/src/software/resampling/mod.rs
+++ b/src/software/resampling/mod.rs
@@ -1,4 +1,5 @@
 pub mod flag;
+#[cfg(feature = "serde")]
 pub use self::flag::Flags;
 
 pub mod dither;