diff -r f4d92381a032 -r 696fe0c9677f libpurple/plugins/signals-test.c
--- a/libpurple/plugins/signals-test.c	Fri Mar 29 01:15:18 2019 +0000
+++ b/libpurple/plugins/signals-test.c	Sun Mar 31 22:22:26 2019 -0400
@@ -598,7 +598,7 @@
  * Sound signal callbacks
  **************************************************************************/
 static int
-sound_playing_event_cb(PurpleSoundEventID event, const PurpleAccount *account) {
+sound_playing_event_cb(PurpleSoundEventID event, PurpleAccount *account) {
 	if (account != NULL)
 		purple_debug_misc("signals test", "sound playing event: %d for account: %s\n",
 	    	            event, purple_account_get_username(account));