diff --git a/src/errors.h b/src/errors.h
index bc1145d..716ec32 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -2208,8 +2208,8 @@
 	INIT(= N_("E859: Failed to convert returned python object to a Vim value"));
 #endif
 #ifdef FEAT_PROP_POPUP
-EXTERN char e_need_id_and_type_with_both[]
-	INIT(= N_("E860: Need 'id' and 'type' with 'both'"));
+EXTERN char e_need_id_and_type_or_types_with_both[]
+	INIT(= N_("E860: Need 'id' and 'type' or 'types' with 'both'"));
 # ifdef FEAT_TERMINAL
 EXTERN char e_cannot_open_second_popup_with_terminal[]
 	INIT(= N_("E861: Cannot open a second popup with a terminal"));
@@ -3316,3 +3316,7 @@
 EXTERN char e_can_only_use_text_align_when_column_is_zero[]
 	INIT(= N_("E1294: Can only use text_align when column is zero"));
 #endif
+#ifdef FEAT_PROP_POPUP
+EXTERN char e_cannot_specify_both_type_and_types[]
+	INIT(= N_("E1295: Cannot specify both 'type' and 'types'"));
+#endif