diff --git a/src/app/dialogs/tools/dialogline.cpp b/src/app/dialogs/tools/dialogline.cpp
index e21037b07..c015a1104 100644
--- a/src/app/dialogs/tools/dialogline.cpp
+++ b/src/app/dialogs/tools/dialogline.cpp
@@ -49,6 +49,11 @@ DialogLine::DialogLine(const VContainer *data, QWidget *parent)
     FillComboBoxTypeLine(ui->comboBoxLineType);
 
     number = 0;
+
+    connect(ui->comboBoxFirstPoint, static_cast<void (QComboBox::*)(const QString &)>(&QComboBox::currentIndexChanged),
+            this, &DialogLine::PointNameChanged);
+    connect(ui->comboBoxSecondPoint, static_cast<void (QComboBox::*)(const QString &)>(&QComboBox::currentIndexChanged),
+            this, &DialogLine::PointNameChanged);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -64,13 +69,7 @@ DialogLine::~DialogLine()
  */
 void DialogLine::setSecondPoint(const quint32 &value)
 {
-    secondPoint = value;
-    const VPointF *point = data->GeometricObject<const VPointF *>(value);
-    qint32 index = ui->comboBoxSecondPoint->findText(point->name());
-    if (index != -1)
-    {
-        ui->comboBoxSecondPoint->setCurrentIndex(index);
-    }
+    setPointId(ui->comboBoxSecondPoint, secondPoint, value, 0);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -91,13 +90,7 @@ void DialogLine::setTypeLine(const QString &value)
  */
 void DialogLine::setFirstPoint(const quint32 &value)
 {
-    firstPoint = value;
-    const VPointF *point = data->GeometricObject<const VPointF *>(value);
-    qint32 index = ui->comboBoxFirstPoint->findText(point->name());
-    if (index != -1)
-    {
-        ui->comboBoxFirstPoint->setCurrentIndex(index);
-    }
+    setPointId(ui->comboBoxFirstPoint, firstPoint, value, 0);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -115,6 +108,24 @@ void DialogLine::DialogAccepted()
     DialogClosed(QDialog::Accepted);
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void DialogLine::PointNameChanged()
+{
+    if (getCurrentObjectId(ui->comboBoxFirstPoint) == getCurrentObjectId(ui->comboBoxSecondPoint))
+    {
+        flagError = false;
+        ChangeColor(ui->labelFirstPoint, Qt::red);
+        ChangeColor(ui->labelSecondPoint, Qt::red);
+    }
+    else
+    {
+        flagError = true;
+        ChangeColor(ui->labelFirstPoint, QColor(76, 76, 76));
+        ChangeColor(ui->labelSecondPoint, QColor(76, 76, 76));
+    }
+    CheckState();
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief ChoosedObject gets id and type of selected object. Save right data and ignore wrong.
diff --git a/src/app/dialogs/tools/dialogline.h b/src/app/dialogs/tools/dialogline.h
index 4de61cfbb..0588a92f3 100644
--- a/src/app/dialogs/tools/dialogline.h
+++ b/src/app/dialogs/tools/dialogline.h
@@ -60,7 +60,8 @@ public slots:
     /** TODO ISSUE 79 : create real function
      * @brief DialogApply apply data and emit signal about applied dialog.
      */
-    virtual void      DialogApply(){}
+    virtual void   DialogApply(){}
+    virtual void   PointNameChanged();
 private:
     Q_DISABLE_COPY(DialogLine)
 
diff --git a/src/app/dialogs/tools/dialogline.ui b/src/app/dialogs/tools/dialogline.ui
index 594335056..5860600dc 100644
--- a/src/app/dialogs/tools/dialogline.ui
+++ b/src/app/dialogs/tools/dialogline.ui
@@ -39,7 +39,7 @@
     <item>
      <layout class="QHBoxLayout" name="horizontalLayout">
       <item>
-       <widget class="QLabel" name="label">
+       <widget class="QLabel" name="labelFirstPoint">
         <property name="minimumSize">
          <size>
           <width>90</width>
@@ -72,7 +72,7 @@
     <item>
      <layout class="QHBoxLayout" name="horizontalLayout_2">
       <item>
-       <widget class="QLabel" name="label_2">
+       <widget class="QLabel" name="labelSecondPoint">
         <property name="minimumSize">
          <size>
           <width>90</width>