diff --git a/src/bfu/hierbox.c b/src/bfu/hierbox.c
index 5b844bc05..c8e3b65b2 100644
--- a/src/bfu/hierbox.c
+++ b/src/bfu/hierbox.c
@@ -335,7 +335,7 @@ hierbox_browser(struct hierbox_browser *browser, struct session *ses)
 	 * have to subtract one. */
 	add_dlg_end(dlg, button + 2 - (anonymous ? anonymous - 1 : 0));
 
-	return do_dialog(term, dlg, getml(dlg, NULL));
+	return do_dialog(term, dlg, getml(dlg, (void *) NULL));
 }
 
 
@@ -434,7 +434,7 @@ push_hierbox_info_button(struct dialog_data *dlg_data, struct widget_data *butto
 
 	box->ops->lock(item);
 
-	msg_box(term, getml(context, NULL), MSGBOX_FREE_TEXT /* | MSGBOX_SCROLLABLE */,
+	msg_box(term, getml(context, (void *) NULL), MSGBOX_FREE_TEXT /* | MSGBOX_SCROLLABLE */,
 		N_("Info"), ALIGN_LEFT,
 		msg,
 		context, 1,
@@ -747,7 +747,7 @@ query_delete_selected_item(void *context_)
 
 	if (item->type == BI_FOLDER) {
 		ops->lock(item);
-		msg_box(term, getml(context, NULL), MSGBOX_FREE_TEXT,
+		msg_box(term, getml(context, (void *) NULL), MSGBOX_FREE_TEXT,
 			listbox_message(delete_folder_title), ALIGN_CENTER,
 			msg_text(term, listbox_message(delete_folder), text),
 			context, 2,
@@ -758,7 +758,7 @@ query_delete_selected_item(void *context_)
 
 		ops->lock(item);
 
-		msg_box(term, getml(context, NULL), MSGBOX_FREE_TEXT,
+		msg_box(term, getml(context, (void *) NULL), MSGBOX_FREE_TEXT,
 			listbox_message(delete_item_title), ALIGN_LEFT,
 			msg_text(term, listbox_message(delete_item),
 			         text, empty_string_or_(msg)),
@@ -807,7 +807,7 @@ push_hierbox_delete_button(struct dialog_data *dlg_data,
 		return status;
 	}
 
-	msg_box(term, getml(context, NULL), 0,
+	msg_box(term, getml(context, (void *) NULL), 0,
 		listbox_message(delete_marked_items_title), ALIGN_CENTER,
 		listbox_message(delete_marked_items),
 		context, 2,
@@ -869,7 +869,7 @@ push_hierbox_clear_button(struct dialog_data *dlg_data,
 		return EVENT_PROCESSED;
 	}
 
-	msg_box(term, getml(context, NULL), 0,
+	msg_box(term, getml(context, (void *) NULL), 0,
 		listbox_message(clear_all_items_title), ALIGN_CENTER,
 		listbox_message(clear_all_items),
 		context, 2,
diff --git a/src/bfu/inpfield.c b/src/bfu/inpfield.c
index 76104081d..90ad2a6ed 100644
--- a/src/bfu/inpfield.c
+++ b/src/bfu/inpfield.c
@@ -908,5 +908,5 @@ input_field_line(struct session *ses, unsigned char *prompt, void *data,
 	add_dlg_field_float2(dlg, prompt, 0, 0, NULL, INPUT_LINE_BUFFER_SIZE,
 			     buffer, history);
 
-	do_dialog(ses->tab->term, dlg, getml(dlg, NULL));
+	do_dialog(ses->tab->term, dlg, getml(dlg, (void *) NULL));
 }
diff --git a/src/config/dialogs.c b/src/config/dialogs.c
index b90add053..f5faa4ac6 100644
--- a/src/config/dialogs.c
+++ b/src/config/dialogs.c
@@ -362,7 +362,7 @@ build_edit_dialog(struct terminal *term, struct session *ses,
 
 	add_dlg_end(dlg, EDIT_WIDGETS_COUNT);
 
-	do_dialog(term, dlg, getml(dlg, name, desc, NULL));
+	do_dialog(term, dlg, getml(dlg, (void *) name, (void *) desc, (void *) NULL));
 #undef EDIT_WIDGETS_COUNT
 }
 
@@ -471,7 +471,7 @@ invalid_option:
 	ctx->option = option;
 	ctx->widget_data = dlg_data->widgets_data;
 
-	input_dialog(term, getml(ctx, NULL), N_("Add option"), N_("Name"),
+	input_dialog(term, getml(ctx, (void *) NULL), N_("Add option"), N_("Name"),
 		     ctx, NULL,
 		     MAX_STR_LEN, "", 0, 0, check_option_name,
 		     add_option_to_tree, NULL);
@@ -807,7 +807,7 @@ really_add_keybinding(void *data, unsigned char *keystroke)
 		if (init_string(&canonical))
 			add_keystroke_to_string(&canonical, &hop->kbd, 0);
 
-		msg_box(new_hop->term, getml(new_hop, NULL), MSGBOX_FREE_TEXT,
+		msg_box(new_hop->term, getml(new_hop, (void *) NULL), MSGBOX_FREE_TEXT,
 			N_("Keystroke already used"), ALIGN_CENTER,
 			msg_text(new_hop->term, N_("The keystroke \"%s\" "
 				 "is currently used for \"%s\".\n"
@@ -886,7 +886,7 @@ push_kbdbind_add_button(struct dialog_data *dlg_data,
 			get_action_name(hop->keymap_id, hop->action_id),
 			get_keymap_name(hop->keymap_id));
 
-	input_dialog(term, getml(hop, text, NULL),
+	input_dialog(term, getml(hop, (void *) text, (void *) NULL),
 		     N_("Add keybinding"), text,
 		     hop, NULL,
 		     MAX_STR_LEN, "", 0, 0, check_keystroke,
diff --git a/src/cookies/dialogs.c b/src/cookies/dialogs.c
index 27bcab9f4..c8f9e60a6 100644
--- a/src/cookies/dialogs.c
+++ b/src/cookies/dialogs.c
@@ -373,7 +373,7 @@ build_edit_dialog(struct terminal *term, struct cookie *cookie)
 
 	add_dlg_end(dlg, EDIT_WIDGETS_COUNT);
 
-	do_dialog(term, dlg, getml(dlg, dlg_server, NULL));
+	do_dialog(term, dlg, getml(dlg, (void *) dlg_server, (void *) NULL));
 #undef EDIT_WIDGETS_COUNT
 }
 
@@ -469,7 +469,7 @@ push_add_server_button(struct dialog_data *dlg_data, struct widget_data *button)
 	add_dlg_ok_button(dlg, _("~OK", term), B_ENTER, add_server_do, name);
 	add_dlg_button(dlg, _("~Cancel", term), B_ESC, cancel_dialog, NULL);
 	add_dlg_end(dlg, SERVER_WIDGETS_COUNT);
-	do_dialog(term, dlg, getml(dlg, NULL));
+	do_dialog(term, dlg, getml(dlg, (void *) NULL));
 
 	return EVENT_PROCESSED;
 #undef SERVER_WIDGETS_COUNT
diff --git a/src/dialogs/download.c b/src/dialogs/download.c
index 63c1a055e..2d177b39b 100644
--- a/src/dialogs/download.c
+++ b/src/dialogs/download.c
@@ -270,7 +270,7 @@ display_download(struct terminal *term, struct file_download *file_download,
 	add_dlg_end(dlg, DOWNLOAD_WIDGETS_COUNT - !!file_download->external_handler);
 #endif
 
-	do_dialog(term, dlg, getml(dlg, NULL));
+	do_dialog(term, dlg, getml(dlg, (void *) NULL));
 }
 
 
diff --git a/src/dialogs/edit.c b/src/dialogs/edit.c
index b920760f4..1787cf6c8 100644
--- a/src/dialogs/edit.c
+++ b/src/dialogs/edit.c
@@ -107,7 +107,7 @@ do_edit_dialog(struct terminal *term, int intl, unsigned char *title,
 
 	add_dlg_end(dlg, EDIT_WIDGETS_COUNT);
 
-	do_dialog(term, dlg, getml(dlg, NULL));
+	do_dialog(term, dlg, getml(dlg, (void *) NULL));
 
 #undef EDIT_WIDGETS_COUNT
 }
diff --git a/src/dialogs/info.c b/src/dialogs/info.c
index 0117418fa..f987aee07 100644
--- a/src/dialogs/info.c
+++ b/src/dialogs/info.c
@@ -127,7 +127,7 @@ menu_keys(struct terminal *term, void *d_, void *xxx)
 		add_actions_to_string(&keys, action_ids, KEYMAP_MAIN, term);
 	}
 
-	msg_box(term, getml(info, NULL), MSGBOX_FREE_TEXT | MSGBOX_SCROLLABLE,
+	msg_box(term, getml(info, (void *) NULL), MSGBOX_FREE_TEXT | MSGBOX_SCROLLABLE,
 		N_("Keys"), ALIGN_LEFT,
 		keys.source,
 		info, 2,
diff --git a/src/dialogs/options.c b/src/dialogs/options.c
index 06ddeb2a6..9475884f7 100644
--- a/src/dialogs/options.c
+++ b/src/dialogs/options.c
@@ -236,7 +236,7 @@ terminal_options(struct terminal *term, void *xxx, struct session *ses)
 
 	add_dlg_end(dlg, TERMOPT_WIDGETS_COUNT - anonymous);
 
-	do_dialog(term, dlg, getml(dlg, NULL));
+	do_dialog(term, dlg, getml(dlg, (void *) NULL));
 }
 
 #ifdef CONFIG_NLS
@@ -315,5 +315,5 @@ resize_terminal_dialog(struct terminal *term)
 
 	add_dlg_end(dlg, RESIZE_WIDGETS_COUNT);
 
-	do_dialog(term, dlg, getml(dlg, NULL));
+	do_dialog(term, dlg, getml(dlg, (void *) NULL));
 }
diff --git a/src/mime/dialogs.c b/src/mime/dialogs.c
index 2a67fcfde..1d56e45e6 100644
--- a/src/mime/dialogs.c
+++ b/src/mime/dialogs.c
@@ -62,7 +62,7 @@ menu_del_ext(struct terminal *term, void *fcp, void *xxx2)
 		return;
 	}
 
-	msg_box(term, getml(extension, NULL), MSGBOX_FREE_TEXT,
+	msg_box(term, getml(extension, (void *) NULL), MSGBOX_FREE_TEXT,
 		N_("Delete extension"), ALIGN_CENTER,
 		msg_text(term, N_("Delete extension %s -> %s?"),
 			 extension, opt->value.string),
@@ -133,7 +133,7 @@ menu_add_ext(struct terminal *term, void *fcp, void *xxx2)
 
 	add_dlg_end(dlg, MIME_WIDGETS_COUNT);
 
-	do_dialog(term, dlg, getml(dlg, NULL));
+	do_dialog(term, dlg, getml(dlg, (void *) NULL));
 }
 
 
diff --git a/src/protocol/auth/dialogs.c b/src/protocol/auth/dialogs.c
index 784135e4b..115afabe2 100644
--- a/src/protocol/auth/dialogs.c
+++ b/src/protocol/auth/dialogs.c
@@ -117,7 +117,7 @@ do_auth_dialog(struct session *ses, void *data)
 
 	add_dlg_end(dlg, AUTH_WIDGETS_COUNT);
 
-	dlg_data = do_dialog(term, dlg, getml(dlg, NULL));
+	dlg_data = do_dialog(term, dlg, getml(dlg, (void *) NULL));
 	/* When there's some username, but no password, automagically jump at
 	 * the password. */
 	if (dlg_data && a->user[0] && !a->password[0])
diff --git a/src/protocol/bittorrent/dialogs.c b/src/protocol/bittorrent/dialogs.c
index 5b88b83cc..5001c5e02 100644
--- a/src/protocol/bittorrent/dialogs.c
+++ b/src/protocol/bittorrent/dialogs.c
@@ -814,7 +814,7 @@ bittorrent_query_callback(void *data, enum connection_state state,
 
 	add_dlg_end(dlg, widgets);
 
-	ml = getml(dlg, NULL);
+	ml = getml(dlg, (void *) NULL);
 	if (!ml) {
 		/* XXX: Assume that the allocated @external_handler will be
 		 * freed when releasing the @type_query. */
diff --git a/src/scripting/lua/core.c b/src/scripting/lua/core.c
index b3b47bfcc..2af40ecef 100644
--- a/src/scripting/lua/core.c
+++ b/src/scripting/lua/core.c
@@ -392,7 +392,7 @@ l_edit_bookmark_dialog(LS)
 
 	add_dlg_end(dlg, L_EDIT_BMK_WIDGETS_COUNT);
 
-	do_dialog(term, dlg, getml(dlg, NULL));
+	do_dialog(term, dlg, getml(dlg, (void *) NULL));
 
 	lua_pushnumber(S, 1);
 	return 1;
@@ -473,7 +473,7 @@ l_xdialog(LS)
 
 	add_dlg_end(dlg, nitems);
 
-	do_dialog(term, dlg, getml(dlg, NULL));
+	do_dialog(term, dlg, getml(dlg, (void *) NULL));
 
 	lua_pushnumber(S, 1);
 	return 1;
diff --git a/src/scripting/python/dialogs.c b/src/scripting/python/dialogs.c
index da096cb7c..c34826238 100644
--- a/src/scripting/python/dialogs.c
+++ b/src/scripting/python/dialogs.c
@@ -78,7 +78,7 @@ python_info_box(PyObject *self, PyObject *args, PyObject *kwargs)
 	title = stracpy(title);
 	if (!title) goto free_text;
 
-	(void) msg_box(python_ses->tab->term, getml(title, NULL),
+	(void) msg_box(python_ses->tab->term, getml(title, (void *) NULL),
 		       MSGBOX_NO_INTL | MSGBOX_SCROLLABLE | MSGBOX_FREE_TEXT,
 		       title, ALIGN_LEFT,
 		       text,
@@ -206,7 +206,8 @@ python_input_box(PyObject *self, PyObject *args, PyObject *kwargs)
 	hop->callback = callback;
 	Py_INCREF(callback);
 
-	input_dialog(python_ses->tab->term, getml(prompt, title, initial, NULL),
+	input_dialog(python_ses->tab->term,
+		     getml(prompt, (void *) title, (void *) initial, (void *) NULL),
 		     title, prompt,
 		     hop, NULL,
 		     MAX_STR_LEN, initial, 0, 0, NULL,
diff --git a/src/scripting/python/menu.c b/src/scripting/python/menu.c
index a648d6268..86f499c68 100644
--- a/src/scripting/python/menu.c
+++ b/src/scripting/python/menu.c
@@ -140,7 +140,7 @@ python_menu(PyObject *self, PyObject *args, PyObject *kwargs)
 	 * Keep track of all the memory we allocate so we'll be able to free
 	 * it in case any error prevents us from displaying the menu.
 	 */
-	ml = getml(menu, NULL);
+	ml = getml(menu, (void *) NULL);
 	if (!ml) {
 		mem_free(menu);
 		return PyErr_NoMemory();
diff --git a/src/session/download.c b/src/session/download.c
index fdb41a191..bed83952b 100644
--- a/src/session/download.c
+++ b/src/session/download.c
@@ -1252,7 +1252,7 @@ do_type_query(struct type_query *type_query, unsigned char *ct, struct mime_hand
 
 	add_dlg_end(dlg, widgets);
 
-	ml = getml(dlg, NULL);
+	ml = getml(dlg, (void *) NULL);
 	if (!ml) {
 		/* XXX: Assume that the allocated @external_handler will be
 		 * freed when releasing the @type_query. */
diff --git a/src/session/task.c b/src/session/task.c
index 8d87462bd..14694b02c 100644
--- a/src/session/task.c
+++ b/src/session/task.c
@@ -270,7 +270,7 @@ ses_goto(struct session *ses, struct uri *uri, unsigned char *target_frame,
 		mem_free_if(uristring);
 	}
 
-	msg_box(ses->tab->term, getml(task, NULL), MSGBOX_FREE_TEXT,
+	msg_box(ses->tab->term, getml(task, (void *) NULL), MSGBOX_FREE_TEXT,
 		N_("Warning"), ALIGN_CENTER,
 		message,
 		task, 2,