Index: modules/auth/src/main/java/common/javax/security/auth/kerberos/KerberosPrincipal.java =================================================================== --- modules/auth/src/main/java/common/javax/security/auth/kerberos/KerberosPrincipal.java (revision 429279) +++ modules/auth/src/main/java/common/javax/security/auth/kerberos/KerberosPrincipal.java (working copy) @@ -163,7 +163,7 @@ if (obj == this) { return true; } - if (obj instanceof KerberosPrincipal) { + if (!(obj instanceof KerberosPrincipal)) { return false; }