diff --git a/erpnext/public/js/projects/timer.js b/erpnext/public/js/projects/timer.js
index 9dae711..0209f4c 100644
--- a/erpnext/public/js/projects/timer.js
+++ b/erpnext/public/js/projects/timer.js
@@ -68,7 +68,7 @@
 			// New activity if no activities found
 			var args = dialog.get_values();
 			if(!args) return;
-			if (frm.doc.time_logs.length <= 1 && !frm.doc.time_logs[0].activity_type && !frm.doc.time_logs[0].from_time) {
+			if (frm.doc.time_logs.length == 1 && !frm.doc.time_logs[0].activity_type && !frm.doc.time_logs[0].from_time) {
 				frm.doc.time_logs = [];
 			}
 			row = frappe.model.add_child(frm.doc, "Timesheet Detail", "time_logs");