diff --git a/src/View/ASubWindow.py b/src/View/ASubWindow.py
index 13719d77635b2725fb541c2ad1184a3d72bd6233..478993cf81b6e37fea77e523bc01c56850c7943c 100644
--- a/src/View/ASubWindow.py
+++ b/src/View/ASubWindow.py
@@ -18,7 +18,7 @@ from PyQt5.QtWidgets import (
     QTimeEdit, QSpinBox, QTextEdit,
     QRadioButton, QComboBox, QFileDialog,
     QMessageBox, QTableView, QAction,
-    QDateTimeEdit, QWidget,
+    QDateTimeEdit, QWidget, QPlainTextEdit,
 )
 from PyQt5.QtCore import (
     QTime, QDateTime,
@@ -179,6 +179,29 @@ class ASubWindowFeatures(object):
         """
         return self.find(QTextEdit, name).toHtml()
 
+    def set_plaintext_edit_text(self, name:str, text:str):
+        """Set text of text edit component
+
+        Args:
+            text_edit: The text edit component name
+            text: The text
+
+        Returns:
+            Nothing
+        """
+        self.find(QPlainTextEdit, name).setPlainText(text)
+
+    def get_plaintext_edit_text(self, name:str):
+        """Get text of text edit component
+
+        Args:
+            text_edit: The text edit component name
+
+        Returns:
+            Text
+        """
+        return self.find(QPlainTextEdit, name).toPlainText()
+
     def set_check_box(self, name:str, checked:bool):
         """Set status of checkbox component
 
diff --git a/src/View/Debug/Window.py b/src/View/Debug/Window.py
index c02075a77fe51171f666fb837be3343f7798f592..974eace334a6cbfdb91fc8ca99ac3bdb3aeb2f1d 100644
--- a/src/View/Debug/Window.py
+++ b/src/View/Debug/Window.py
@@ -51,8 +51,8 @@ class ReplWindow(ASubMainWindow, ListedSubWindow):
         self.setup_connections()
 
     def setup_connections(self):
-        self._hup_sc = QShortcut(QKeySequence("Up"), self)
-        self._hdown_sc = QShortcut(QKeySequence("Down"), self)
+        self._hup_sc = QShortcut(QKeySequence("ctrl+Up"), self)
+        self._hdown_sc = QShortcut(QKeySequence("ctrl+Down"), self)
         self._hup_sc.activated.connect(self.history_up)
         self._hdown_sc.activated.connect(self.history_down)
 
@@ -61,21 +61,25 @@ class ReplWindow(ASubMainWindow, ListedSubWindow):
     def history_up(self):
         if self._history_ind < len(self._history):
             self._history_ind += 1
-            self.set_line_edit_text("lineEdit", self._history[-self._history_ind])
+            self.set_plaintext_edit_text("plainTextEdit", self._history[-self._history_ind])
 
     def history_down(self):
         if self._history_ind > 0:
             self._history_ind -= 1
-            self.set_line_edit_text("lineEdit", self._history[-self._history_ind])
+            self.set_plaintext_edit_text("plainTextEdit", self._history[-self._history_ind])
+        else:
+            self.set_plaintext_edit_text("plainTextEdit", "")
 
     def eval_python(self):
-        code = self.get_line_edit_text("lineEdit")
+        code = self.get_plaintext_edit_text("plainTextEdit")
         self._history.append(code)
-        self.set_line_edit_text("lineEdit", "")
+        self.set_plaintext_edit_text("plainTextEdit", "")
         self._history_ind = 0
 
-        rich_code = "self.__debug_exec_result__ = " + code
-        logger.debug(f"{code}")
+        rich_code = code.strip().split("\n")
+        rich_code[-1] = "self.__debug_exec_result__ = " + rich_code[-1]
+        rich_code = "\n".join(rich_code)
+        logger.debug(f"User debug command : {rich_code}")
         try:
             value = exec(rich_code)
             value = self.__debug_exec_result__
diff --git a/src/View/ui/DebugRepl.ui b/src/View/ui/DebugRepl.ui
index f889061d8f7ce2be570e174c6d57859a9b908831..03494a0cd53c65e3e1e91c5594af2b1429dcb24b 100644
--- a/src/View/ui/DebugRepl.ui
+++ b/src/View/ui/DebugRepl.ui
@@ -21,7 +21,7 @@
     <item row="1" column="0">
      <layout class="QHBoxLayout" name="horizontalLayout">
       <item>
-       <widget class="QLineEdit" name="lineEdit"/>
+       <widget class="QPlainTextEdit" name="plainTextEdit"/>
       </item>
       <item>
        <widget class="QPushButton" name="pushButton">