diff --git a/lib/krb5/heim_err.et b/lib/krb5/heim_err.et
index d93810f26..a040c0eb4 100644
--- a/lib/krb5/heim_err.et
+++ b/lib/krb5/heim_err.et
@@ -13,5 +13,6 @@ error_code LOG_PARSE,		"Error parsing log destination"
 error_code V4_PRINC_NO_CONV,	"Failed to convert v4 principal"
 error_code SALTTYPE_NOSUPP,	"Salt type is not supported by enctype"
 error_code NOHOST,		"Host not found"
+error_code OPNOTSUPP,		"Operation not supported"
 
 end