diff --git a/src/lib.rs b/src/lib.rs
index 5ed316e..dc7ea65 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,4 @@
 pub mod core;
 pub mod func;
+#[cfg(test)]
 mod xrcs;
diff --git a/src/xrcs.rs b/src/xrcs.rs
index a3326e4..754612a 100644
--- a/src/xrcs.rs
+++ b/src/xrcs.rs
@@ -1,5 +1,6 @@
 /// Solutions to some exercises by Alisa Feistel.
 /// Included here for their relevance to the whole Monad theme.
+/// Also, Alisa is too lazy to put them in a separate project for now.
 #[cfg(test)]
 mod tests {
     fn bind<T, F: FnOnce(T) -> Option<T>>(f: F, fa: Option<T>) -> Option<T> {