diff --git a/lights_web/static/index.html b/lights_web/static/index.html
index 69b9db7..219afb7 100644
--- a/lights_web/static/index.html
+++ b/lights_web/static/index.html
@@ -218,6 +218,7 @@
 							return function(){
 								var toggle_request = new XMLHttpRequest();
 								toggle_request.open("POST", "/light/" + light.id + "/on/toggle", true);
+								toggle_request.setRequestHeader('Content-Type', 'application/json');
 								toggle_request.send(JSON.stringify(true));
 							};
 						}(light);
@@ -226,9 +227,10 @@
 						return function ( lights ) {
 							for ( i in lights ) { 
 								light = lights[i];
-								var toggle_request = new XMLHttpRequest();
-								toggle_request.open("POST", "/light/" + light.id + "/on/set", true);
-								toggle_request.send(JSON.stringify(true));
+								var on_request = new XMLHttpRequest();
+								on_request.open("POST", "/light/" + light.id + "/on/set", true);
+								on_request.setRequestHeader('Content-Type', 'application/json');
+								on_request.send(JSON.stringify(true));
 							};
 						};
 					}(lights);