diff --git a/src/Blazor.Diagrams.Core/Behaviors/DragNewLinkBehavior.cs b/src/Blazor.Diagrams.Core/Behaviors/DragNewLinkBehavior.cs
index 76e3cd73..5e77b629 100644
--- a/src/Blazor.Diagrams.Core/Behaviors/DragNewLinkBehavior.cs
+++ b/src/Blazor.Diagrams.Core/Behaviors/DragNewLinkBehavior.cs
@@ -56,7 +56,7 @@ private void OnPointerDown(Model? model, MouseEventArgs e)
 
         if (model is PortModel port)
         {
-            if (port.Locked || port.Enabled)
+            if (port.Locked || !port.Enabled)
                 return;
 
             _targetPositionAnchor = new PositionAnchor(CalculateTargetPosition(e.ClientX, e.ClientY));
diff --git a/src/Blazor.Diagrams.Core/Models/Base/Model.cs b/src/Blazor.Diagrams.Core/Models/Base/Model.cs
index ae750686..0c40525d 100644
--- a/src/Blazor.Diagrams.Core/Models/Base/Model.cs
+++ b/src/Blazor.Diagrams.Core/Models/Base/Model.cs
@@ -18,7 +18,7 @@ protected Model(string id)
 
     public string Id { get; }
     public bool Locked { get; set; }
-    public bool Enabled { get; set; }
+    public bool Enabled { get; set; } = true;
     public bool Visible
     {
         get => _visible;
diff --git a/tests/Blazor.Diagrams.Core.Tests/Behaviors/DragNewLinkBehaviorTests.cs b/tests/Blazor.Diagrams.Core.Tests/Behaviors/DragNewLinkBehaviorTests.cs
index 8a99cd86..25b58f88 100644
--- a/tests/Blazor.Diagrams.Core.Tests/Behaviors/DragNewLinkBehaviorTests.cs
+++ b/tests/Blazor.Diagrams.Core.Tests/Behaviors/DragNewLinkBehaviorTests.cs
@@ -22,7 +22,6 @@ public void Behavior_ShouldCreateLinkWithSinglePortAnchorSource_WhenMouseDownOnP
             Initialized = true,
             Position = new Point(110, 60),
             Size = new Size(10, 20),
-            Enabled = false,
         });
 
         // Act
@@ -455,7 +454,7 @@ public void Behavior_ShouldNotCreateLinkWithSinglePortAnchorSource_WhenMouseDown
             Initialized = true,
             Position = new Point(110, 60),
             Size = new Size(10, 20),
-            Enabled = true,
+            Enabled = false,
         });
 
         // Act