diff --git a/layout.html b/layout.html
index 0160e15..2480195 100644
--- a/layout.html
+++ b/layout.html
@@ -643,6 +643,7 @@
 				const template = document.querySelector("#schedule_header_row_template");
 				const template_clone = template.content.cloneNode(true);
 				const grid = document.querySelector("#schedule_grid");
+				grid.innerHTML = ``;
 				grid.appendChild(template_clone);	
 
 				for (var i = 0; i < 24 * 2; i++) {