diff --git a/src/Avalonia.Base/Styling/ChildSelector.cs b/src/Avalonia.Base/Styling/ChildSelector.cs
index bc1d257ce6..b3f6794154 100644
--- a/src/Avalonia.Base/Styling/ChildSelector.cs
+++ b/src/Avalonia.Base/Styling/ChildSelector.cs
@@ -65,6 +65,6 @@ namespace Avalonia.Styling
         }
 
         private protected override (Selector?, IStyle?) MovePrevious(IStyle? nestingParent) => (null, null);
-        protected override Selector? MovePreviousOrParent() => _parent;
+        private protected override Selector? MovePreviousOrParent() => _parent;
     }
 }
diff --git a/src/Avalonia.Base/Styling/DescendentSelector.cs b/src/Avalonia.Base/Styling/DescendentSelector.cs
index 3a16574e04..7f36c27a37 100644
--- a/src/Avalonia.Base/Styling/DescendentSelector.cs
+++ b/src/Avalonia.Base/Styling/DescendentSelector.cs
@@ -70,6 +70,6 @@ namespace Avalonia.Styling
         }
 
         private protected override (Selector?, IStyle?) MovePrevious(IStyle? nestingParent) => (null, null);
-        protected override Selector? MovePreviousOrParent() => _parent;
+        private protected override Selector? MovePreviousOrParent() => _parent;
     }
 }
diff --git a/src/Avalonia.Base/Styling/NestingSelector.cs b/src/Avalonia.Base/Styling/NestingSelector.cs
index dd0bac31c6..60ad8106d9 100644
--- a/src/Avalonia.Base/Styling/NestingSelector.cs
+++ b/src/Avalonia.Base/Styling/NestingSelector.cs
@@ -37,6 +37,6 @@ namespace Avalonia.Styling
             return parent is Style parentStyle ? (parentStyle.Selector, parentStyle.Parent) : (null, null);
         }
 
-        protected override Selector? MovePreviousOrParent() => null;
+        private protected override Selector? MovePreviousOrParent() => null;
     }
 }
diff --git a/src/Avalonia.Base/Styling/NotSelector.cs b/src/Avalonia.Base/Styling/NotSelector.cs
index ebde392a3b..be5cfaca49 100644
--- a/src/Avalonia.Base/Styling/NotSelector.cs
+++ b/src/Avalonia.Base/Styling/NotSelector.cs
@@ -67,6 +67,6 @@ namespace Avalonia.Styling
         }
 
         private protected override (Selector?, IStyle?) MovePrevious(IStyle? nestingParent) => (_previous, nestingParent);
-        protected override Selector? MovePreviousOrParent() => _previous;
+        private protected override Selector? MovePreviousOrParent() => _previous;
     }
 }
diff --git a/src/Avalonia.Base/Styling/NthChildSelector.cs b/src/Avalonia.Base/Styling/NthChildSelector.cs
index e6d9cf58a9..40fb5a4434 100644
--- a/src/Avalonia.Base/Styling/NthChildSelector.cs
+++ b/src/Avalonia.Base/Styling/NthChildSelector.cs
@@ -105,7 +105,7 @@ namespace Avalonia.Styling
         }
 
         private protected override (Selector?, IStyle?) MovePrevious(IStyle? nestingParent) => (_previous, nestingParent);
-        protected override Selector? MovePreviousOrParent() => _previous;
+        private protected override Selector? MovePreviousOrParent() => _previous;
 
         public override string ToString()
         {
diff --git a/src/Avalonia.Base/Styling/OrSelector.cs b/src/Avalonia.Base/Styling/OrSelector.cs
index 115e0aeb95..2ab00d65f8 100644
--- a/src/Avalonia.Base/Styling/OrSelector.cs
+++ b/src/Avalonia.Base/Styling/OrSelector.cs
@@ -103,7 +103,7 @@ namespace Avalonia.Styling
         }
 
         private protected override (Selector?, IStyle?) MovePrevious(IStyle? nestingParent) => (null, null);
-        protected override Selector? MovePreviousOrParent() => null;
+        private protected override Selector? MovePreviousOrParent() => null;
 
         internal override void ValidateNestingSelector(bool inControlTheme)
         {
diff --git a/src/Avalonia.Base/Styling/PropertyEqualsSelector.cs b/src/Avalonia.Base/Styling/PropertyEqualsSelector.cs
index 96f8c8dfeb..62caa9bab3 100644
--- a/src/Avalonia.Base/Styling/PropertyEqualsSelector.cs
+++ b/src/Avalonia.Base/Styling/PropertyEqualsSelector.cs
@@ -90,7 +90,7 @@ namespace Avalonia.Styling
         }
 
         private protected override (Selector?, IStyle?) MovePrevious(IStyle? nestingParent) => (_previous, nestingParent);
-        protected override Selector? MovePreviousOrParent() => _previous;
+        private protected override Selector? MovePreviousOrParent() => _previous;
 
         internal static bool Compare(Type propertyType, object? propertyValue, object? value)
         {
diff --git a/src/Avalonia.Base/Styling/Selector.cs b/src/Avalonia.Base/Styling/Selector.cs
index cc8598c5e3..67109961ba 100644
--- a/src/Avalonia.Base/Styling/Selector.cs
+++ b/src/Avalonia.Base/Styling/Selector.cs
@@ -95,7 +95,7 @@ namespace Avalonia.Styling
         /// <summary>
         /// Moves to the previous selector or the parent selector.
         /// </summary>
-        protected abstract Selector? MovePreviousOrParent();
+        private protected abstract Selector? MovePreviousOrParent();
 
         internal virtual void ValidateNestingSelector(bool inControlTheme)
         {
diff --git a/src/Avalonia.Base/Styling/TemplateSelector.cs b/src/Avalonia.Base/Styling/TemplateSelector.cs
index a68b7003b8..0af263b4e5 100644
--- a/src/Avalonia.Base/Styling/TemplateSelector.cs
+++ b/src/Avalonia.Base/Styling/TemplateSelector.cs
@@ -49,6 +49,6 @@ namespace Avalonia.Styling
         }
 
         private protected override (Selector?, IStyle?) MovePrevious(IStyle? nestingParent) => (null, null);
-        protected override Selector? MovePreviousOrParent() => _parent;
+        private protected override Selector? MovePreviousOrParent() => _parent;
     }
 }
diff --git a/src/Avalonia.Base/Styling/TypeNameAndClassSelector.cs b/src/Avalonia.Base/Styling/TypeNameAndClassSelector.cs
index 3a2150b1e9..7783d3f653 100644
--- a/src/Avalonia.Base/Styling/TypeNameAndClassSelector.cs
+++ b/src/Avalonia.Base/Styling/TypeNameAndClassSelector.cs
@@ -140,7 +140,7 @@ namespace Avalonia.Styling
         }
 
         private protected override (Selector?, IStyle?) MovePrevious(IStyle? nestingParent) => (_previous, nestingParent);
-        protected override Selector? MovePreviousOrParent() => _previous;
+        private protected override Selector? MovePreviousOrParent() => _previous;
 
         private string BuildSelectorString()
         {