diff --git a/src/state.rs b/src/state.rs
index 9d4f1a29..64480c75 100644
--- a/src/state.rs
+++ b/src/state.rs
@@ -124,6 +124,7 @@ impl ProgressState {
         self.started.elapsed() + self.eta()
     }
 
+    /// The number of steps per second
     pub fn per_sec(&self) -> f64 {
         let per_sec = 1.0 / self.est.seconds_per_step();
         if per_sec.is_nan() {