diff --git a/Src/Fido2/Objects/CredentialPublicKey.cs b/Src/Fido2/Objects/CredentialPublicKey.cs
index 24391981..7913d258 100644
--- a/Src/Fido2/Objects/CredentialPublicKey.cs
+++ b/Src/Fido2/Objects/CredentialPublicKey.cs
@@ -101,7 +101,7 @@ public CredentialPublicKey(X509Certificate2 cert, COSE.Algorithm alg)
                     break;
                 }
             default:
-                throw new InvalidOperationException($"MMissing or unknown kty {_type}");
+                throw new InvalidOperationException($"Missing or unknown kty {_type}");
         }
     }