diff --git a/cmd/mtwebmapper/client/src/store/index.js b/cmd/mtwebmapper/client/src/store/index.js
index 58bf295..4baebf8 100644
--- a/cmd/mtwebmapper/client/src/store/index.js
+++ b/cmd/mtwebmapper/client/src/store/index.js
@@ -49,7 +49,7 @@ export default new Vuex.Store({
 
 	actions: {
 		stopAutoUpdate: function({ state }) {
-			if (this.socket) {
+			if (state.socket) {
 				var s = state.socket;
 				state.socket = null;
 				s.close();