diff --git a/public/js/apps/Cis/Cis.js b/public/js/apps/Cis/Cis.js
index fe2ed8837..d4f846f25 100644
--- a/public/js/apps/Cis/Cis.js
+++ b/public/js/apps/Cis/Cis.js
@@ -257,9 +257,14 @@ const app = Vue.createApp({
 	provide() {
 		return { // provide injectable & watchable language property
 			language: Vue.computed(() => this.$p.user_language),
-			isMobile: Vue.computed(() => this.windowWidth < 767),
+			isMobile: Vue.computed(() => this.isMobile),
 		}	
 	},
+	computed: {
+		isMobile: function() {
+			return (this.windowWidth < 767);
+		}
+	},
 	methods: {
 		isInternalRoute(href) {
 			const internalBase = window.location.origin