diff --git a/ICSharpCode.Decompiler.Tests/SingleFileBundleTests.cs b/ICSharpCode.Decompiler.Tests/SingleFileBundleTests.cs
index 2bc48ee8f..c74451b52 100644
--- a/ICSharpCode.Decompiler.Tests/SingleFileBundleTests.cs
+++ b/ICSharpCode.Decompiler.Tests/SingleFileBundleTests.cs
@@ -26,13 +26,7 @@ namespace ICSharpCode.Decompiler.Tests
 	[TestFixture]
 	public class SingleFileBundleTests
 	{
-		// The 32-byte bundle signature (SHA-256 of ".net core bundle"), as in SingleFileBundle.IsBundle.
-		static readonly byte[] Signature = new byte[] {
-			0x8b, 0x12, 0x02, 0xb9, 0x6a, 0x61, 0x20, 0x38,
-			0x72, 0x7b, 0x93, 0x02, 0x14, 0xd7, 0xa0, 0x32,
-			0x13, 0xf5, 0xb9, 0xe6, 0xef, 0xae, 0x33, 0x18,
-			0xee, 0x3b, 0x2d, 0xce, 0x24, 0xb3, 0x6a, 0xae
-		};
+		static readonly byte[] Signature = SingleFileBundle.BundleSignature.ToArray();
 
 		[Test]
 		public unsafe void IsBundle_SignatureAtStart_DoesNotReadBeforeBuffer()
diff --git a/ICSharpCode.Decompiler/Properties/AssemblyInfo.cs b/ICSharpCode.Decompiler/Properties/AssemblyInfo.cs
index 6a8f0e31c..753d60580 100644
--- a/ICSharpCode.Decompiler/Properties/AssemblyInfo.cs
+++ b/ICSharpCode.Decompiler/Properties/AssemblyInfo.cs
@@ -36,6 +36,7 @@ using System.Runtime.InteropServices;
 [assembly: AssemblyInformationalVersion(DecompilerVersionInfo.FullVersionWithCommitHash)]
 
 [assembly: InternalsVisibleTo("ICSharpCode.Decompiler.Tests, PublicKey=00240000048000009400000006020000002400005253413100040000010001004dcf3979c4e902efa4dd2163a039701ed5822e6f1134d77737296abbb97bf0803083cfb2117b4f5446a217782f5c7c634f9fe1fc60b4c11d62c5b3d33545036706296d31903ddcf750875db38a8ac379512f51620bb948c94d0831125fbc5fe63707cbb93f48c1459c4d1749eb7ac5e681a2f0d6d7c60fa527a3c0b8f92b02bf")]
+[assembly: InternalsVisibleTo("ILSpy.Tests, PublicKey=00240000048000009400000006020000002400005253413100040000010001004dcf3979c4e902efa4dd2163a039701ed5822e6f1134d77737296abbb97bf0803083cfb2117b4f5446a217782f5c7c634f9fe1fc60b4c11d62c5b3d33545036706296d31903ddcf750875db38a8ac379512f51620bb948c94d0831125fbc5fe63707cbb93f48c1459c4d1749eb7ac5e681a2f0d6d7c60fa527a3c0b8f92b02bf")]
 
 [assembly: SuppressMessage("Microsoft.Usage", "CA2243:AttributeStringLiteralsShouldParseCorrectly",
 	Justification = "AssemblyInformationalVersion does not need to be a parsable version")]
diff --git a/ICSharpCode.Decompiler/SingleFileBundle.cs b/ICSharpCode.Decompiler/SingleFileBundle.cs
index 2e82f78df..0d3817740 100644
--- a/ICSharpCode.Decompiler/SingleFileBundle.cs
+++ b/ICSharpCode.Decompiler/SingleFileBundle.cs
@@ -35,15 +35,19 @@ namespace ICSharpCode.Decompiler
 			}
 		}
 
+		/// <summary>
+		/// The 32-byte bundle signature: SHA-256 of ".net core bundle".
+		/// </summary>
+		internal static ReadOnlySpan<byte> BundleSignature => new byte[] {
+			0x8b, 0x12, 0x02, 0xb9, 0x6a, 0x61, 0x20, 0x38,
+			0x72, 0x7b, 0x93, 0x02, 0x14, 0xd7, 0xa0, 0x32,
+			0x13, 0xf5, 0xb9, 0xe6, 0xef, 0xae, 0x33, 0x18,
+			0xee, 0x3b, 0x2d, 0xce, 0x24, 0xb3, 0x6a, 0xae
+		};
+
 		public static unsafe bool IsBundle(byte* data, long size, out long bundleHeaderOffset)
 		{
-			ReadOnlySpan<byte> bundleSignature = new byte[] {
-				// 32 bytes represent the bundle signature: SHA-256 for ".net core bundle"
-				0x8b, 0x12, 0x02, 0xb9, 0x6a, 0x61, 0x20, 0x38,
-				0x72, 0x7b, 0x93, 0x02, 0x14, 0xd7, 0xa0, 0x32,
-				0x13, 0xf5, 0xb9, 0xe6, 0xef, 0xae, 0x33, 0x18,
-				0xee, 0x3b, 0x2d, 0xce, 0x24, 0xb3, 0x6a, 0xae
-			};
+			ReadOnlySpan<byte> bundleSignature = BundleSignature;
 
 			// 'end' is the last position at which a full signature still fits, so it is a valid
 			// candidate itself: a memory-mapped view reports the exact file length on Unix (Windows
diff --git a/ILSpy.Tests/LoadedPackageBundleTests.cs b/ILSpy.Tests/LoadedPackageBundleTests.cs
index 3301f1037..07abc769a 100644
--- a/ILSpy.Tests/LoadedPackageBundleTests.cs
+++ b/ILSpy.Tests/LoadedPackageBundleTests.cs
@@ -23,6 +23,7 @@ using System.IO.Compression;
 using System.Linq;
 using System.Text;
 
+using ICSharpCode.Decompiler;
 using ICSharpCode.ILSpyX;
 
 using NUnit.Framework;
@@ -38,13 +39,7 @@ namespace ICSharpCode.ILSpy.Tests;
 [TestFixture]
 public class LoadedPackageBundleTests
 {
-	// The 32-byte bundle signature (SHA-256 of ".net core bundle"), as in SingleFileBundle.IsBundle.
-	static readonly byte[] Signature = new byte[] {
-		0x8b, 0x12, 0x02, 0xb9, 0x6a, 0x61, 0x20, 0x38,
-		0x72, 0x7b, 0x93, 0x02, 0x14, 0xd7, 0xa0, 0x32,
-		0x13, 0xf5, 0xb9, 0xe6, 0xef, 0xae, 0x33, 0x18,
-		0xee, 0x3b, 0x2d, 0xce, 0x24, 0xb3, 0x6a, 0xae
-	};
+	static readonly byte[] Signature = SingleFileBundle.BundleSignature.ToArray();
 
 	readonly List<string> tempFiles = new();