3 files changed, 5 insertions, 5 deletions

diff --git a/src/module/Combobox.jsx b/src/module/Combobox.jsx
index 27a8226..1e172a7 100644
--- a/src/module/Combobox.jsx
+++ b/src/module/Combobox.jsx
@@ -9,7 +9,7 @@ const formatOption = (option, disabledOptions) => {
   }
 
   let disabled = false;
-  if (disabledOptions.indexOf(option) >= 0) {
+  if (disabledOptions && disabledOptions.indexOf(option) >= 0) {
     disabled = true;
   }
 
diff --git a/src/module/Header.jsx b/src/module/Header.jsx
index c2f8eef..fec02af 100644
--- a/src/module/Header.jsx
+++ b/src/module/Header.jsx
@@ -88,9 +88,9 @@ const Header = React.createClass({
 
         // if time value is disabled, response warning.
         if (
-          disabledHours.indexOf(value.getHourOfDay()) >= 0 ||
-          disabledMinutes.indexOf(value.getMinutes()) >= 0 ||
-          disabledSeconds.indexOf(value.getSeconds()) >= 0
+          (disabledHours && disabledHours.indexOf(value.getHourOfDay()) >= 0) ||
+          (disabledMinutes && disabledMinutes.indexOf(value.getMinutes()) >= 0) ||
+          (disabledSeconds && disabledSeconds.indexOf(value.getSeconds()) >= 0)
         ) {
           this.setState({
             invalid: true,
diff --git a/src/module/Panel.jsx b/src/module/Panel.jsx
index 72934e5..12d23f7 100644
--- a/src/module/Panel.jsx
+++ b/src/module/Panel.jsx
@@ -9,7 +9,7 @@ function noop() {
 function generateOptions(length, disabledOptions, hideDisabledOptions) {
   const arr = [];
   for (let value = 0; value < length; value++) {
-    if ((disabledOptions && disabledOptions.indexOf(value) < 0) || !hideDisabledOptions) {
+    if (!disabledOptions || disabledOptions.indexOf(value) < 0 || !hideDisabledOptions) {
       arr.push(value);
     }
   }