--- a/pidgin/pidginprotocolchooser.h	Mon Aug 03 20:20:02 2020 -0500
+++ b/pidgin/pidginprotocolchooser.h	Thu Aug 06 22:22:03 2020 -0500
@@ -21,6 +21,10 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301 USA
  */
 
+#if !defined(PIDGIN_GLOBAL_HEADER_INSIDE) && !defined(PIDGIN_COMPILATION)
+# error "only <pidgin.h> may be included directly"
+#endif
+
 #ifndef PIDGIN_PROTOCOL_CHOOSER_H
 #define PIDGIN_PROTOCOL_CHOOSER_H