diff --git a/src/nodes/evaluate.rs b/src/nodes/evaluate.rs
index 9c2be17..ceb768a 100644
--- a/src/nodes/evaluate.rs
+++ b/src/nodes/evaluate.rs
@@ -154,6 +154,7 @@ fn collapse_toplevel(nodes: &mut Vec<Node>, mut end: usize) {
     }
 }
 
+#[cfg(test)]
 use super::PREC;
 
 #[test]