diff --git a/captcha.cpp b/captcha.cpp
index 7c66d85..d6b877a 100644
--- a/captcha.cpp
+++ b/captcha.cpp
@@ -20,6 +20,9 @@
 * Copyright (c) 2022 Acetone
 * Updated for IRCaBot project
 * Usage example:
+* #include <QApplication>
+* int main(int argc, char *argv[]) {
+*    QApplication a(argc, argv);
 *    Captcha cp;
 *    cp.randomize();
 *    cp.generateText(5);
@@ -29,6 +32,7 @@
 *        f.close();
 *    }
 *    qInfo() << cp.captchaText(); // answer
+* }
 */
 
 #include "captcha.h"
diff --git a/captcha.h b/captcha.h
index eb0a21a..c2dbc86 100644
--- a/captcha.h
+++ b/captcha.h
@@ -20,6 +20,9 @@
 * Copyright (c) 2022 Acetone
 * Updated for IRCaBot project
 * Usage example:
+* #include <QApplication>
+* int main(int argc, char *argv[]) {
+*    QApplication a(argc, argv);
 *    Captcha cp;
 *    cp.randomize();
 *    cp.generateText(5);
@@ -29,6 +32,7 @@
 *        f.close();
 *    }
 *    qInfo() << cp.captchaText(); // answer
+* }
 */
 
 #ifndef CAPTCHA_H