diff --git a/lib/form/form.js b/lib/form/form.js
index 43e209c394a..38e518bef44 100644
--- a/lib/form/form.js
+++ b/lib/form/form.js
@@ -497,6 +497,7 @@ if (typeof M.form.dependencyManager === 'undefined') {
                     // Multiple selects can have one or more value assigned. A pipe (|) is used as a value separator
                     // when multiple values have to be selected at the same time.
                     values = value.split('|');
+                    selected = [];
                     this.get('options').each(function() {
                         if (this.get('selected')) {
                             selected[selected.length] = this.get('value');