diff --git a/ILSpy/Languages/CSharpLanguage.cs b/ILSpy/Languages/CSharpLanguage.cs
index d157626dc..ace98898d 100644
--- a/ILSpy/Languages/CSharpLanguage.cs
+++ b/ILSpy/Languages/CSharpLanguage.cs
@@ -393,7 +393,7 @@ namespace ICSharpCode.ILSpy
 							output.Write("// Public key: ");
 							var reader = metadata.GetBlobReader(asm.PublicKey);
 							while (reader.RemainingBytes > 0)
-								output.Write(reader.ReadByte().ToString("x"));
+								output.Write(reader.ReadByte().ToString("x2"));
 							output.WriteLine();
 						}
 					}