diff --git a/src/errors.h b/src/errors.h
index 21495cd..2474e27 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -3554,10 +3554,9 @@
 	INIT(= N_("E1505: Invalid format specifier: %s"));
 EXTERN char e_xattr_erange[]
 	INIT(= N_("E1506: Buffer too small to copy xattr value or key"));
+EXTERN char e_aptypes_is_null_nr_str[]
+	INIT(= "E1507: Internal error: ap_types or ap_types[idx] is NULL: %d: %s");
 EXTERN char e_xattr_e2big[]
 	INIT(= N_("E1508: Size of the extended attribute value is larger than the maximum size allowed"));
 EXTERN char e_xattr_other[]
 	INIT(= N_("E1509: Error occured when reading or writing extended attribute"));
-// E1507, E1509 - E1519 unused
-EXTERN char e_aptypes_is_null_nr_str[]
-	INIT(= "E1520: Internal error: ap_types or ap_types[idx] is NULL: %d: %s");