diff --git a/lib/krb5/heim_err.et b/lib/krb5/heim_err.et
index 547a14e04..ecc59585c 100644
--- a/lib/krb5/heim_err.et
+++ b/lib/krb5/heim_err.et
@@ -17,6 +17,7 @@ error_code OPNOTSUPP,		"Operation not supported"
 error_code EOF,			"End of file"
 error_code BAD_MKEY,		"Failed to get the master key"
 error_code SERVICE_NOMATCH,	"Unacceptable service used"
+error_code NOT_SEEKABLE,	"File descriptor not seekable"
 
 index 64
 prefix HEIM_PKINIT