diff -Nurd libpeas-1.26.0/peas-demo/peas-demo.c libpeas-1.26.0.new/peas-demo/peas-demo.c
--- libpeas-1.26.0/peas-demo/peas-demo.c	2020-03-06 21:12:16.247286600 +0000
+++ libpeas-1.26.0.new/peas-demo/peas-demo.c	2020-04-08 07:47:04.093350285 +0000
@@ -23,6 +23,8 @@
 #include <config.h>
 #endif
 
+#include <locale.h>
+
 #include <girepository.h>
 #include <glib/gi18n.h>
 #include <gtk/gtk.h>