diff --git a/src/applogic/mod.rs b/src/applogic/mod.rs
index 55672a7..0ced524 100644
--- a/src/applogic/mod.rs
+++ b/src/applogic/mod.rs
@@ -118,6 +118,7 @@ pub struct TimingData {
     pub max_end_sec: Option<i16>,
 }
 
+#[cfg(feature = "spat")]
 impl TimingData {
     pub fn new(value: &map::SignalGroup, now: chrono::DateTime<chrono::Utc>) -> Option<Self> {
         let min = value