diff --git a/libs/server.js b/libs/server.js
index 5ec0085..e5e0ba1 100644
--- a/libs/server.js
+++ b/libs/server.js
@@ -113,7 +113,12 @@ function parseRequest(data) {
         }
     };
     if (data.index != undefined) {
-        blinkstickConfig.options.index = data.index;
+        blinkstickConfig.options.index = parseInt(data.index);
+        if (blinkstickConfig.options.index < 0) {
+            blinkstickConfig.options.index = 0;
+        } else if (blinkstickConfig.options.index > 7) {
+            blinkstickConfig.options.index = 7;
+        }
     }
     if (blinkstickConfig.options.duration < 100) {
         blinkstickConfig.options.duration = 100;