diff -r 9ff9acf9fa14 -r 3573c82d32d8 pidgin/gtkconv.c
--- a/pidgin/gtkconv.c	Wed Aug 30 20:33:01 2017 -0300
+++ b/pidgin/gtkconv.c	Thu Aug 31 22:40:50 2017 -0500
@@ -1679,7 +1679,7 @@
 			g_object_set_data_full(G_OBJECT(button), "user_data", g_strdup(who), g_free);
 
 
-		if (protocol && PURPLE_PROTOCOL_IMPLEMENTS(protocol, XFER_IFACE, send))
+		if (protocol && PURPLE_IS_PROTOCOL_XFER(protocol))
 		{
 			gboolean can_receive_file = TRUE;
 
@@ -1693,9 +1693,11 @@
 				gchar *real_who = NULL;
 				real_who = purple_protocol_chat_iface_get_user_real_name(protocol, gc,
 					purple_chat_conversation_get_id(chat), who);
-				if (!(!PURPLE_PROTOCOL_IMPLEMENTS(protocol, XFER_IFACE, can_receive) ||
-						purple_protocol_xfer_iface_can_receive(protocol, gc, real_who ? real_who : who)))
+
+				if (!purple_protocol_xfer_can_receive(protocol, gc, real_who ? real_who : who)) {
 					can_receive_file = FALSE;
+				}
+
 				g_free(real_who);
 			}
 
@@ -7424,12 +7426,18 @@
 
 		if (PURPLE_IS_IM_CONVERSATION(conv))
 		{
+			gboolean can_send_file = FALSE;
+			const gchar *name = purple_conversation_get_name(conv);
+
+			if (PURPLE_IS_PROTOCOL_XFER(protocol) &&
+			    purple_protocol_xfer_can_receive(PURPLE_PROTOCOL_XFER(protocol), gc, name)
+			) {
+				can_send_file = TRUE;
+			}
+
 			gtk_action_set_sensitive(win->menu->add, (PURPLE_PROTOCOL_IMPLEMENTS(protocol, SERVER_IFACE, add_buddy)));
 			gtk_action_set_sensitive(win->menu->remove, (PURPLE_PROTOCOL_IMPLEMENTS(protocol, SERVER_IFACE, remove_buddy)));
-			gtk_action_set_sensitive(win->menu->send_file,
-									 (PURPLE_PROTOCOL_IMPLEMENTS(protocol, XFER_IFACE, send) &&
-									 (!PURPLE_PROTOCOL_IMPLEMENTS(protocol, XFER_IFACE, can_receive) ||
-									  purple_protocol_xfer_iface_can_receive(protocol, gc, purple_conversation_get_name(conv)))));
+			gtk_action_set_sensitive(win->menu->send_file, can_send_file);
 			gtk_action_set_sensitive(win->menu->get_attention, (PURPLE_PROTOCOL_IMPLEMENTS(protocol, ATTENTION_IFACE, send)));
 			gtk_action_set_sensitive(win->menu->alias,
 									 (account != NULL) &&