diff --git a/src/main.rs b/src/main.rs
index 91f77a2..0c3de7c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -120,9 +120,9 @@ fn log(f: &String, enabled: &bool, since: &Option<String>, verbose: &bool, preci
          curr.d = 0.0;
       }
       let mut d = 1.0;
-      if curr.xs.len() == 0 {
+      if x.x.len() == 0 { // clock ins get duration zero
          d = 0.0;
-      } else if i > 0 {
+      } else if i > 0 && tsheet.xs[i].timestamp(&0) == tsheet.xs[i-1].timestamp(&0) { // if same day as previous then use elapsed as duration
          d = ((tsheet.xs[i].t - tsheet.xs[i-1].t) as f32 / (60.0*60.0)) as f32;
       }
       if *verbose {