diff --git a/infolog/js/app.js b/infolog/js/app.js
index 3900ec09d9..ff36f22b74 100644
--- a/infolog/js/app.js
+++ b/infolog/js/app.js
@@ -86,7 +86,7 @@ var InfologApp = /** @class */ (function (_super) {
                 jQuery(_et2.DOMContainer).on('clear', jQuery.proxy(function () { egw.css(this); }, '#' + nm.getDOMNode(nm).id + ' .et2_box.infoDes'));
                 // Enable decrypt on hover
                 if (this.egw.user('apps').stylite) {
-                    this._get_stylite(function () { this.mailvelopeAvailable(function () { app.stylite.decrypt_hover(nm); }); });
+                    this._get_stylite(function () { this.mailvelopeAvailable(function () { var _a; (_a = app.stylite) === null || _a === void 0 ? void 0 : _a.decrypt_hover(nm); }); });
                 }
                 break;
             case 'infolog.edit.print':
diff --git a/infolog/js/app.ts b/infolog/js/app.ts
index 2f936f4f6d..3e238a7e8b 100644
--- a/infolog/js/app.ts
+++ b/infolog/js/app.ts
@@ -87,7 +87,7 @@ class InfologApp extends EgwApp
 				// Enable decrypt on hover
 				if(this.egw.user('apps').stylite)
 				{
-					this._get_stylite(function() {this.mailvelopeAvailable(function() {app.stylite.decrypt_hover(nm);});});
+					this._get_stylite(function() {this.mailvelopeAvailable(function() {app.stylite?.decrypt_hover(nm);});});
 				}
 				break;
 			case 'infolog.edit.print':