diff --git a/ChangeLog.txt b/ChangeLog.txt
index dd61fbef0..7b88a3d21 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -1,4 +1,5 @@
 # Version 0.4.2
+- Tool line. Block selecting the same point twice.
 - [#443] Not valid dxf file. libdxf updated to version 3.12.2.0. Fixed drawing subpaths.
 - Fixed combobox width in Dialog "Tool True Dart point".
 - [#441] Broken reference incrementation for tool "True Dart point".
diff --git a/src/libs/vtools/dialogs/tools/dialogline.cpp b/src/libs/vtools/dialogs/tools/dialogline.cpp
index 04545ebf2..e8848e671 100644
--- a/src/libs/vtools/dialogs/tools/dialogline.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogline.cpp
@@ -182,13 +182,16 @@ void DialogLine::ChosenObject(quint32 id, const SceneObject &type)
                     }
                     break;
                 case 1:
-                    if (SetObject(id, ui->comboBoxSecondPoint, ""))
+                    if (getCurrentObjectId(ui->comboBoxFirstPoint) != id)
                     {
-                        if (flagError)
+                        if (SetObject(id, ui->comboBoxSecondPoint, ""))
                         {
-                            number = 0;
-                            prepare = true;
-                            DialogAccepted();
+                            if (flagError)
+                            {
+                                number = 0;
+                                prepare = true;
+                                DialogAccepted();
+                            }
                         }
                     }
                     break;