diff --git a/static/script.js b/static/script.js
index 1f82905..7aefe19 100644
--- a/static/script.js
+++ b/static/script.js
@@ -128,8 +128,12 @@ function save(partID) {
 	data.append('partno', partnos[0]);
 	if (partnos.length > 1)
 		data.append('partnoalt', partnos[1]);
+	else
+		data.append('partnoalt', '');
 	if(partnos.length > 2)
 	  data.append('partnoalt2', partnos[2]);
+	else
+		data.append('partnoalt2', '');
 	data.append('description', description_v);
 	data.append('quantity', quantity_v);
 	data.append('notes', notes_v);