diff --git a/source/ublexec.cc b/source/ublexec.cc
index 6d5c070..1119cf6 100644
--- a/source/ublexec.cc
+++ b/source/ublexec.cc
@@ -285,6 +285,7 @@ void MainWindow::changed_user() {
 }
 
 void MainWindow::delete_cmd(const int &x, const int &y) {
+    if (x == 0) {}
     if (y > 1) {
         chbTerminal->set_active(false);
         chbAnotherUser->set_active(false);
@@ -294,6 +295,7 @@ void MainWindow::delete_cmd(const int &x, const int &y) {
 }
 
 bool MainWindow::focus_in_txt_cmd(GdkEventFocus* event) {
+    if (event) {}
     if (user_cmd.length() != 0) {
     }
     else if (name_app.length() != 0) {
@@ -311,7 +313,7 @@ bool MainWindow::focus_in_txt_cmd(GdkEventFocus* event) {
 
 void MainWindow::synopsis_show() {
     string cmd = "xdg-open " + string(gettext("https://wiki.ublinux.com/ru/Программное_обеспечение/Программы_и_утилиты/Все/")) + app_name + " &";
-    system(cmd.c_str());
+    index_error = system(cmd.c_str());
 }
 
 void MainWindow::icon_clear() {
@@ -377,7 +379,7 @@ void MainWindow::tempate_icon_select(Gtk::IconView *icon, Glib::RefPtr<Gtk::List
         user_cmd = "";
         txtCmd->set_text(app_name_exec);
         name_app = txtCmd->get_text();
-        int len_name_app = name_app.length();
+        size_t len_name_app = name_app.length();
         string array_del[] = {"%f", "%F", "%d", "%D", "%n", "%N", "%U"};
         for (auto &del_sim: array_del) {
             str_remove(name_app, del_sim);
@@ -605,7 +607,7 @@ string MainWindow::start_cmd(string user_cmd) {
         string user_cmd_X = "xhost +SI:localuser:";
         user_cmd_X += cmbUser->get_active_text();
         user_cmd_X += " > /dev/null 2>&1";
-        system(user_cmd_X.c_str());
+        index_error = system(user_cmd_X.c_str());
     }
     if ((cbxExecuteEpriority->get_active()) && (chbAnotherUser->get_active() == false)) {
         str_nice_cmd = "nice -n " + to_string(spinPriority->get_value_as_int()) + " ";
@@ -665,7 +667,7 @@ string MainWindow::start_cmd(string user_cmd) {
 
 void MainWindow::call_app(string &cmd) {
     if (cmd.length() != 0) {
-        std::thread t([&](string cmd) {system(cmd.c_str());}, cmd);
+        std::thread t([&](string cmd) {int index = system(cmd.c_str()); if (index){}}, cmd);
         t.detach();
     }
 }
@@ -718,6 +720,7 @@ string MainWindow::call(string cmd) {
 }
 
 bool MainWindow::focus_out_txt_cmd(GdkEventFocus* event) {
+    if (event) {}
     if (cmd_old != txtCmd->get_text()) {
         user_cmd = txtCmd->get_text();
     }
diff --git a/source/ublexec.h b/source/ublexec.h
index f236971..56b8c91 100644
--- a/source/ublexec.h
+++ b/source/ublexec.h
@@ -211,6 +211,7 @@ public:
           string execute_cmd = "";
           string path_file = "";
           string name_app = "";
+          int index_error = 0;
           bool flag_pkexec = false;
           bool flag_su = false;
           bool flag_sudo = false;