diff --git a/src/errors.h b/src/errors.h
index 047ff9c..96aef67 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -316,8 +316,10 @@
 	INIT(= N_("E1062: Cannot index a Number"));
 EXTERN char e_type_mismatch_for_v_variable[]
 	INIT(= N_("E1063: Type mismatch for v: variable"));
+#endif
 EXTERN char e_yank_register_changed_while_using_it[]
 	INIT(= N_("E1064: Yank register changed while using it"));
+#ifdef FEAT_EVAL
 // E1065 unused
 EXTERN char e_cannot_declare_a_register_str[]
 	INIT(= N_("E1066: Cannot declare a register: %s"));