diff --git a/web/documentserver-example/nodejs/public/javascripts/jscript.js b/web/documentserver-example/nodejs/public/javascripts/jscript.js
index 61979d0b..c958e4d9 100644
--- a/web/documentserver-example/nodejs/public/javascripts/jscript.js
+++ b/web/documentserver-example/nodejs/public/javascripts/jscript.js
@@ -194,33 +194,14 @@ if (typeof jQuery != "undefined") {
         jq("#step3").addClass("done").removeClass("current");
         jq("#beginView, #beginEmbedded").removeClass("disable");
 
-        // To check the Fano condition with letters for any strings (One word is the beginning of another)
-        var superWords = ['.docxf'];
-        var EEL = EditedExtList;
-        var FEL = FilledExtList;
-
         var fileName = jq("#hiddenFileName").val();
         var posExt = fileName.lastIndexOf('.');
         posExt = 0 <= posExt ? fileName.substring(posExt).trim().toLowerCase() : '';
 
-        if (String(superWords).indexOf(posExt) != -1 ){
-            superWords.forEach(el => {
-                if (el.includes(posExt) && el != posExt) {
-                    if (EEL.includes(el)) {
-                        let start = EEL.indexOf(el);
-                        let end = start + el.length;
-                        EEL = EEL.slice(0,start-1) + EEL.slice(end);
-                    }
-                    if (FEL.includes(el)) {
-                        let start = FEL.indexOf(el);
-                        let end = start + el.length;
-                        FEL = FEL.slice(0,start-1) + FEL.slice(end);
-                    }
-                }
-            });
-        }
+        var checkEdited = EditedExtList.split(",").find(i => i == posExt);
+        var checkFilled = FilledExtList.split(",").find(i => i == posExt);
 
-        if (EEL.indexOf(posExt) != -1 || FEL.indexOf(posExt) != -1) {
+        if (checkEdited != undefined || checkFilled != undefined) {
             jq("#beginEdit").removeClass("disable");
         }
     };