activity clock custom seconds prompt should default to 0 seconds to avoid error

1 files changed, 1 insertions, 1 deletions

diff --git a/js/main.js b/js/main.js
index f6a9e55..7e43e4b 100644
--- a/js/main.js
+++ b/js/main.js
@@ -103,7 +103,7 @@ function activityClockReset()
 function activityClockCustom()
 {
     var minutes = prompt("Number of minutes", "0");
-    var seconds = prompt("Number of seconds");
+    var seconds = prompt("Number of seconds", "0");
     activityClockGo(parseInt(minutes) * 60 + parseInt(seconds));
 }