diff --git a/source/ublexec.cc b/source/ublexec.cc
index d8dcfcf..4c70ac2 100644
--- a/source/ublexec.cc
+++ b/source/ublexec.cc
@@ -214,6 +214,15 @@ void MainWindow::event(){
     rbSudo->signal_toggled().connect(sigc::mem_fun(*this, &MainWindow::denamic_cmd));
     txtCmd->signal_focus_out_event().connect(sigc::mem_fun(*this, &MainWindow::focus_out_txt_cmd));
     txtCmd->signal_focus_in_event().connect(sigc::mem_fun(*this, &MainWindow::focus_in_txt_cmd));
+    txtCmd->signal_delete_text().connect(sigc::mem_fun(*this, &MainWindow::delete_cmd));
+}
+void MainWindow::delete_cmd(const int &x,const int &y){
+    if (y>1){
+        chbTerminal->set_active(false);
+        chbAnotherUser->set_active(false);
+        cbxExecuteEpriority->set_active(false);
+        txtCmd->set_text("");
+    }
 }
 
 bool MainWindow::focus_in_txt_cmd(GdkEventFocus* event){
@@ -229,9 +238,6 @@ bool MainWindow::focus_in_txt_cmd(GdkEventFocus* event){
     else{
         user_cmd = txtCmd->get_text();
     }
-    chbTerminal->set_active(false);
-    chbAnotherUser->set_active(false);
-    cbxExecuteEpriority->set_active(false);
     cmd_old = txtCmd->get_text();
     return true;
 }
@@ -592,11 +598,9 @@ void MainWindow::denamic_cmd(){
 }
 
 bool MainWindow::focus_out_txt_cmd(GdkEventFocus* event){
-    //this->focus_in_txt_cmd(event);
     if (cmd_old!=txtCmd->get_text()){
         user_cmd = txtCmd->get_text();
     }
-    this->denamic_cmd();
     return true;
 }
 
diff --git a/source/ublexec.h b/source/ublexec.h
index 829e7c7..75eef48 100644
--- a/source/ublexec.h
+++ b/source/ublexec.h
@@ -84,6 +84,7 @@ public:
     void select_System();
     void icon_clear();
     void set_icon_array();
+    void delete_cmd(const int &x,const int &y);
     void synopsis_show();
     void denamic_cmd();
     bool focus_out_txt_cmd(GdkEventFocus* event);