diff --git a/src/Avalonia.Base/AvaloniaObject.cs b/src/Avalonia.Base/AvaloniaObject.cs
index 05753738cb..afea0ba345 100644
--- a/src/Avalonia.Base/AvaloniaObject.cs
+++ b/src/Avalonia.Base/AvaloniaObject.cs
@@ -416,7 +416,7 @@ namespace Avalonia
         /// <returns>
         /// A disposable which can be used to terminate the binding.
         /// </returns>
-        public IBindingExpression Bind(AvaloniaProperty property, IBinding binding)
+        public BindingExpressionBase Bind(AvaloniaProperty property, IBinding binding)
         {
             if (binding is not IBinding2 b)
                 throw new NotSupportedException($"Unsupported IBinding implementation '{binding}'.");
diff --git a/src/Avalonia.Base/AvaloniaProperty.cs b/src/Avalonia.Base/AvaloniaProperty.cs
index 1b32e4699e..62e8db62d7 100644
--- a/src/Avalonia.Base/AvaloniaProperty.cs
+++ b/src/Avalonia.Base/AvaloniaProperty.cs
@@ -566,7 +566,7 @@ namespace Avalonia
         /// </summary>
         /// <param name="o">The object instance.</param>
         /// <param name="source">The binding source.</param>
-        internal abstract IBindingExpression RouteBind(
+        internal abstract BindingExpressionBase RouteBind(
             AvaloniaObject o,
             UntypedBindingExpressionBase source);
 
diff --git a/src/Avalonia.Base/Data/Core/BindingExpressionBase.cs b/src/Avalonia.Base/Data/BindingExpressionBase.cs
similarity index 84%
rename from src/Avalonia.Base/Data/Core/BindingExpressionBase.cs
rename to src/Avalonia.Base/Data/BindingExpressionBase.cs
index 401f8ac520..ad411130cf 100644
--- a/src/Avalonia.Base/Data/Core/BindingExpressionBase.cs
+++ b/src/Avalonia.Base/Data/BindingExpressionBase.cs
@@ -1,9 +1,10 @@
-using Avalonia.PropertyStore;
+using System;
+using Avalonia.PropertyStore;
 using Avalonia.Styling;
 
-namespace Avalonia.Data.Core;
+namespace Avalonia.Data;
 
-public abstract class BindingExpressionBase : IBindingExpression, ISetterInstance
+public abstract class BindingExpressionBase : IDisposable, ISetterInstance
 {
     private protected BindingExpressionBase()
     {
diff --git a/src/Avalonia.Base/Data/IBindingExpression.cs b/src/Avalonia.Base/Data/IBindingExpression.cs
deleted file mode 100644
index 8ab35c61f8..0000000000
--- a/src/Avalonia.Base/Data/IBindingExpression.cs
+++ /dev/null
@@ -1,7 +0,0 @@
-using System;
-
-namespace Avalonia.Data;
-
-public interface IBindingExpression : IDisposable
-{
-}
diff --git a/src/Avalonia.Base/DirectPropertyBase.cs b/src/Avalonia.Base/DirectPropertyBase.cs
index c3aa7ac602..733df0d4a8 100644
--- a/src/Avalonia.Base/DirectPropertyBase.cs
+++ b/src/Avalonia.Base/DirectPropertyBase.cs
@@ -183,7 +183,7 @@ namespace Avalonia
             return o.Bind(this, source);
         }
 
-        internal override IBindingExpression RouteBind(AvaloniaObject o, UntypedBindingExpressionBase source)
+        internal override BindingExpressionBase RouteBind(AvaloniaObject o, UntypedBindingExpressionBase source)
         {
             return o.GetValueStore().AddBinding(this, source);
         }
diff --git a/src/Avalonia.Base/PropertyStore/ValueStore.cs b/src/Avalonia.Base/PropertyStore/ValueStore.cs
index 7da95a2990..4bca74b1b6 100644
--- a/src/Avalonia.Base/PropertyStore/ValueStore.cs
+++ b/src/Avalonia.Base/PropertyStore/ValueStore.cs
@@ -43,7 +43,7 @@ namespace Avalonia.PropertyStore
             ReevaluateEffectiveValues();
         }
 
-        public IBindingExpression AddBinding<T>(
+        public BindingExpressionBase AddBinding<T>(
             StyledProperty<T> property,
             UntypedBindingExpressionBase source)
         {
@@ -156,7 +156,7 @@ namespace Avalonia.PropertyStore
             }
         }
 
-        public IBindingExpression AddBinding<T>(DirectPropertyBase<T> property, UntypedBindingExpressionBase source)
+        public BindingExpressionBase AddBinding<T>(DirectPropertyBase<T> property, UntypedBindingExpressionBase source)
         {
             DisposeExistingLocalValueBinding(property);
             _localValueBindings ??= new();
diff --git a/src/Avalonia.Base/StyledProperty.cs b/src/Avalonia.Base/StyledProperty.cs
index e8ff8f72ed..8fdc62f361 100644
--- a/src/Avalonia.Base/StyledProperty.cs
+++ b/src/Avalonia.Base/StyledProperty.cs
@@ -228,7 +228,7 @@ namespace Avalonia
             return target.Bind<TValue>(this, source, priority);
         }
 
-        internal override IBindingExpression RouteBind(AvaloniaObject o, UntypedBindingExpressionBase source)
+        internal override BindingExpressionBase RouteBind(AvaloniaObject o, UntypedBindingExpressionBase source)
         {
             return o.GetValueStore().AddBinding(this, source);
         }
diff --git a/tests/Avalonia.Base.UnitTests/AvaloniaPropertyTests.cs b/tests/Avalonia.Base.UnitTests/AvaloniaPropertyTests.cs
index 837fdaeac7..fcdbcf9704 100644
--- a/tests/Avalonia.Base.UnitTests/AvaloniaPropertyTests.cs
+++ b/tests/Avalonia.Base.UnitTests/AvaloniaPropertyTests.cs
@@ -175,7 +175,7 @@ namespace Avalonia.Base.UnitTests
                 throw new NotImplementedException();
             }
 
-            internal override IBindingExpression RouteBind(AvaloniaObject o, UntypedBindingExpressionBase source)
+            internal override BindingExpressionBase RouteBind(AvaloniaObject o, UntypedBindingExpressionBase source)
             {
                 throw new NotImplementedException();
             }