diff --git a/templates/new_workout.html b/templates/new_workout.html
index f56fa3a..0d5368c 100644
--- a/templates/new_workout.html
+++ b/templates/new_workout.html
@@ -125,7 +125,7 @@
                 const diff = Math.abs(now - startTime) / 1000; // get difference in seconds
                 let hours = Math.floor(diff / (60 * 60));
                 let minutes = Math.floor(diff / 60) % 60;
-                let seconds = Math.floor(diff);
+                let seconds = Math.floor(diff % 60);
 
                 let timeSegments = [];
                 if (hours > 0) {