diff --git a/.editorconfig b/.editorconfig
index a5f7795882..0cdf3b92d3 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -194,4 +194,7 @@ dotnet_diagnostic.IDE0068.severity = none
 dotnet_diagnostic.IDE0069.severity = none
 
 #Disable operator overloads requiring alternate named methods
-dotnet_diagnostic.CA2225.severity = none
\ No newline at end of file
+dotnet_diagnostic.CA2225.severity = none
+
+# Banned APIs
+dotnet_diagnostic.RS0030.severity = error
\ No newline at end of file
diff --git a/CodeAnalysis/BannedSymbols.txt b/CodeAnalysis/BannedSymbols.txt
index 47839608c9..60cce39176 100644
--- a/CodeAnalysis/BannedSymbols.txt
+++ b/CodeAnalysis/BannedSymbols.txt
@@ -7,3 +7,4 @@ M:osu.Framework.Graphics.Sprites.SpriteText.#ctor;Use OsuSpriteText.
 M:osu.Framework.Bindables.IBindableList`1.GetBoundCopy();Fails on iOS. Use manual ctor + BindTo instead. (see https://github.com/mono/mono/issues/19900)
 T:Microsoft.EntityFrameworkCore.Internal.EnumerableExtensions;Don't use internal extension methods.
 T:Microsoft.EntityFrameworkCore.Internal.TypeExtensions;Don't use internal extension methods.
+M:System.Enum.HasFlagFast(System.Enum);Use osu.Framework.Extensions.EnumExtensions.HasFlagFast<T>() instead.
\ No newline at end of file