diff --git a/src/kete_core/src/flux/comets.rs b/src/kete_core/src/flux/comets.rs
index d0359f4..bbdabfe 100644
--- a/src/kete_core/src/flux/comets.rs
+++ b/src/kete_core/src/flux/comets.rs
@@ -84,6 +84,7 @@ impl CometMKParams {
     }
 }
 
+#[cfg(test)]
 mod tests {
     use super::*;