diff --git a/ChangeLog.md b/ChangeLog.md
index 1ba6a46101..0b387e81d5 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fix analyzer [RCS1246](https://josefpihrt.github.io/docs/roslynator/analyzers/RCS1246) ([PR](https://github.com/dotnet/roslynator/pull/1676))
 - Fix analyzer [RCS1248](https://josefpihrt.github.io/docs/roslynator/analyzers/RCS1248) ([PR](https://github.com/dotnet/roslynator/pull/1677))
 - Fix analyzer [RCS1203](https://josefpihrt.github.io/docs/roslynator/analyzers/RCS1203) ([PR](https://github.com/dotnet/roslynator/pull/1683))
+- Fix analyzer [RCS1043](https://josefpihrt.github.io/docs/roslynator/analyzers/RCS1043) ([PR](https://github.com/dotnet/roslynator/pull/1684))
 - Fix refactoring [Check expression for null](https://josefpihrt.github.io/docs/roslynator/refactorings/RR0024) ([PR](https://github.com/dotnet/roslynator/pull/1682))
 
 ## [4.14.0] - 2025-07-26
diff --git a/src/Analyzers/CSharp/Analysis/RemovePartialModifierFromTypeWithSinglePartAnalyzer.cs b/src/Analyzers/CSharp/Analysis/RemovePartialModifierFromTypeWithSinglePartAnalyzer.cs
index d3d568093c..85dc3d0dcf 100644
--- a/src/Analyzers/CSharp/Analysis/RemovePartialModifierFromTypeWithSinglePartAnalyzer.cs
+++ b/src/Analyzers/CSharp/Analysis/RemovePartialModifierFromTypeWithSinglePartAnalyzer.cs
@@ -59,6 +59,12 @@ private static void AnalyzeTypeDeclaration(SyntaxNodeAnalysisContext context)
         if (_metadataNames.Any(c => symbol.InheritsFrom(c)))
             return;
 
+        foreach (ISymbol member in symbol.GetMembers())
+        {
+            if (member.HasAttribute(MetadataNames.System_Text_RegularExpressions_GeneratedRegexAttribute))
+                return;
+        }
+
         foreach (MemberDeclarationSyntax member in typeDeclaration.Members)
         {
             if (member is MethodDeclarationSyntax methodDeclaration
diff --git a/src/Core/MetadataNames.cs b/src/Core/MetadataNames.cs
index a19d62a4cd..61736b974c 100644
--- a/src/Core/MetadataNames.cs
+++ b/src/Core/MetadataNames.cs
@@ -63,6 +63,7 @@ internal static class MetadataNames
     public static readonly MetadataName System_Runtime_Serialization_StreamingContext = MetadataName.Parse("System.Runtime.Serialization.StreamingContext");
     public static readonly MetadataName System_Span_T = MetadataName.Parse("System.Span`1");
     public static readonly MetadataName System_StringComparison = MetadataName.Parse("System.StringComparison");
+    public static readonly MetadataName System_Text_RegularExpressions_GeneratedRegexAttribute = MetadataName.Parse("System.Text.RegularExpressions.GeneratedRegexAttribute");
     public static readonly MetadataName System_Text_RegularExpressions_Regex = MetadataName.Parse("System.Text.RegularExpressions.Regex");
     public static readonly MetadataName System_Text_RegularExpressions_RegexOptions = MetadataName.Parse("System.Text.RegularExpressions.RegexOptions");
     public static readonly MetadataName System_Text_StringBuilder = MetadataName.Parse("System.Text.StringBuilder");
diff --git a/src/Tests/Analyzers.Tests/RCS1043RemovePartialModifierFromTypeWithSinglePartTests.cs b/src/Tests/Analyzers.Tests/RCS1043RemovePartialModifierFromTypeWithSinglePartTests.cs
index 4a5fcf26c5..2eb692754d 100644
--- a/src/Tests/Analyzers.Tests/RCS1043RemovePartialModifierFromTypeWithSinglePartTests.cs
+++ b/src/Tests/Analyzers.Tests/RCS1043RemovePartialModifierFromTypeWithSinglePartTests.cs
@@ -245,4 +245,18 @@ class FrameworkElement
 }
 ");
     }
+
+    [Fact, Trait(Traits.Analyzer, DiagnosticIdentifiers.RemovePartialModifierFromTypeWithSinglePart)]
+    public async Task TestNoDiagnostic_GeneratedRegexAttribute()
+    {
+        await VerifyNoDiagnosticAsync("""
+using System.Text.RegularExpressions;
+
+partial class C
+{
+    [GeneratedRegex("^[a-z]{2}$", RegexOptions.IgnoreCase | RegexOptions.CultureInvariant)]
+    private static partial Regex Pattern();
+}
+""", options: Options.AddAllowedCompilerDiagnosticId("CS8795"));
+    }
 }