diff --git a/gtk/gtkcolorchooserwidget.c b/gtk/gtkcolorchooserwidget.c
index 9830b20417..4edccad11a 100644
--- a/gtk/gtkcolorchooserwidget.c
+++ b/gtk/gtkcolorchooserwidget.c
@@ -713,12 +713,10 @@ gtk_color_chooser_widget_class_init (GtkColorChooserWidgetClass *class)
 
   gtk_widget_class_set_css_name (GTK_WIDGET_CLASS (class), I_("colorchooser"));
 
-  gtk_widget_class_install_stateful_action (GTK_WIDGET_CLASS (class), "color.select",
-                                            gtk_color_chooser_widget_activate_color_select,
-                                            "(dddd)", NULL, NULL, NULL);
-  gtk_widget_class_install_stateful_action (GTK_WIDGET_CLASS (class), "color.customize",
-                                            gtk_color_chooser_widget_activate_color_customize,
-                                            "(dddd)", NULL, NULL, NULL);
+  gtk_widget_class_install_action (GTK_WIDGET_CLASS (class), "color.select", "(dddd)",
+                                   gtk_color_chooser_widget_activate_color_select);
+  gtk_widget_class_install_action (GTK_WIDGET_CLASS (class), "color.customize", "(dddd)",
+                                   gtk_color_chooser_widget_activate_color_customize);
 }
 
 /* GtkColorChooser implementation {{{1 */
diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index 57a90dde26..4c9c09a1f9 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -1160,19 +1160,19 @@ gtk_label_class_init (GtkLabelClass *class)
   quark_gtk_signal = g_quark_from_static_string ("gtk-signal");
   quark_link = g_quark_from_static_string ("link");
 
-  gtk_widget_class_install_action (widget_class, "clipboard.cut",
+  gtk_widget_class_install_action (widget_class, "clipboard.cut", NULL,
                                    gtk_label_nop);
-  gtk_widget_class_install_action (widget_class, "clipboard.copy",
+  gtk_widget_class_install_action (widget_class, "clipboard.copy", NULL,
                                    gtk_label_activate_clipboard_copy);
-  gtk_widget_class_install_action (widget_class, "clipboard.paste",
+  gtk_widget_class_install_action (widget_class, "clipboard.paste", NULL,
                                    gtk_label_nop);
-  gtk_widget_class_install_action (widget_class, "selection.delete",
+  gtk_widget_class_install_action (widget_class, "selection.delete", NULL,
                                    gtk_label_nop);
-  gtk_widget_class_install_action (widget_class, "selection.select-all",
+  gtk_widget_class_install_action (widget_class, "selection.select-all", NULL,
                                    gtk_label_activate_selection_select_all);
-  gtk_widget_class_install_action (widget_class, "link.open",
+  gtk_widget_class_install_action (widget_class, "link.open", NULL,
                                    gtk_label_activate_link_open);
-  gtk_widget_class_install_action (widget_class, "link.copy",
+  gtk_widget_class_install_action (widget_class, "link.copy", NULL,
                                    gtk_label_activate_link_copy);
 }
 
diff --git a/gtk/gtklinkbutton.c b/gtk/gtklinkbutton.c
index 07c9b04e32..bbf19a08c7 100644
--- a/gtk/gtklinkbutton.c
+++ b/gtk/gtklinkbutton.c
@@ -232,7 +232,7 @@ gtk_link_button_class_init (GtkLinkButtonClass *klass)
   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_LINK_BUTTON_ACCESSIBLE);
   gtk_widget_class_set_css_name (widget_class, I_("button"));
 
-  gtk_widget_class_install_action (widget_class, "clipboard.copy",
+  gtk_widget_class_install_action (widget_class, "clipboard.copy", NULL,
                                    gtk_link_button_activate_clipboard_copy);
 }
 
diff --git a/gtk/gtktext.c b/gtk/gtktext.c
index 370adda586..943f0d0cbf 100644
--- a/gtk/gtktext.c
+++ b/gtk/gtktext.c
@@ -1363,21 +1363,21 @@ gtk_text_class_init (GtkTextClass *class)
   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TEXT_ACCESSIBLE);
   gtk_widget_class_set_css_name (widget_class, I_("text"));
 
-  gtk_widget_class_install_action (widget_class, "clipboard.cut",
+  gtk_widget_class_install_action (widget_class, "clipboard.cut", NULL,
                                    gtk_text_activate_clipboard_cut);
-  gtk_widget_class_install_action (widget_class, "clipboard.copy",
+  gtk_widget_class_install_action (widget_class, "clipboard.copy", NULL,
                                    gtk_text_activate_clipboard_copy);
-  gtk_widget_class_install_action (widget_class, "clipboard.paste",
+  gtk_widget_class_install_action (widget_class, "clipboard.paste", NULL,
                                    gtk_text_activate_clipboard_paste);
-  gtk_widget_class_install_action (widget_class, "selection.delete",
+  gtk_widget_class_install_action (widget_class, "selection.delete", NULL,
                                    gtk_text_activate_selection_delete);
-  gtk_widget_class_install_action (widget_class, "selection.select-all",
+  gtk_widget_class_install_action (widget_class, "selection.select-all", NULL,
                                    gtk_text_activate_selection_select_all);
-  gtk_widget_class_install_action (widget_class, "misc.insert-emoji",
+  gtk_widget_class_install_action (widget_class, "misc.insert-emoji", NULL,
                                    gtk_text_activate_misc_insert_emoji);
-  gtk_widget_class_install_stateful_action (widget_class, "misc.toggle-visibility",
+  gtk_widget_class_install_stateful_action (widget_class, "misc.toggle-visibility", NULL,
                                             gtk_text_activate_misc_toggle_visibility,
-                                            NULL, "b",
+                                            "b",
                                             gtk_text_set_misc_toggle_visibility,
                                             gtk_text_get_misc_toggle_visibility);
 }
diff --git a/gtk/gtktextview.c b/gtk/gtktextview.c
index 923550ed47..1c6e780b95 100644
--- a/gtk/gtktextview.c
+++ b/gtk/gtktextview.c
@@ -1602,17 +1602,17 @@ gtk_text_view_class_init (GtkTextViewClass *klass)
   quark_gtk_signal = g_quark_from_static_string ("gtk-signal");
   quark_text_view_child = g_quark_from_static_string ("gtk-text-view-child");
 
-  gtk_widget_class_install_action (widget_class, "clipboard.cut",
+  gtk_widget_class_install_action (widget_class, "clipboard.cut", NULL,
                                    gtk_text_view_activate_clipboard_cut);
-  gtk_widget_class_install_action (widget_class, "clipboard.copy",
+  gtk_widget_class_install_action (widget_class, "clipboard.copy", NULL,
                                    gtk_text_view_activate_clipboard_copy);
-  gtk_widget_class_install_action (widget_class, "clipboard.paste",
+  gtk_widget_class_install_action (widget_class, "clipboard.paste", NULL,
                                    gtk_text_view_activate_clipboard_paste);
-  gtk_widget_class_install_action (widget_class, "selection.delete",
+  gtk_widget_class_install_action (widget_class, "selection.delete", NULL,
                                    gtk_text_view_activate_selection_delete);
-  gtk_widget_class_install_action (widget_class, "selection.select-all",
+  gtk_widget_class_install_action (widget_class, "selection.select-all", NULL,
                                    gtk_text_view_activate_selection_select_all);
-  gtk_widget_class_install_action (widget_class, "misc.insert-emoji",
+  gtk_widget_class_install_action (widget_class, "misc.insert-emoji", NULL,
                                    gtk_text_view_activate_misc_insert_emoji);
 }
 
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index de0ed764dc..16d86cfbb7 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -13434,6 +13434,7 @@ gtk_widget_should_layout (GtkWidget *widget)
  * gtk_widget_class_install_action:
  * @widget_class: a #GtkWidgetClass
  * @action_name: a prefixed action name, such as "clipboard.paste"
+ * @parameter_type: (allow-none): the parameter type, or %NULL
  * @activate: callback to use when the action is activated
  *
  * This should be called at class initialization time to specify
@@ -13446,18 +13447,20 @@ gtk_widget_should_layout (GtkWidget *widget)
 void
 gtk_widget_class_install_action (GtkWidgetClass              *widget_class,
                                  const char                  *action_name,
+                                 const char                  *parameter_type,
                                  GtkWidgetActionActivateFunc  activate)
 {
-  gtk_widget_class_install_stateful_action (widget_class, action_name, activate,
-                                            NULL, NULL, NULL, NULL);
+  gtk_widget_class_install_stateful_action (widget_class, action_name,
+                                            parameter_type, activate,
+                                            NULL, NULL, NULL);
 }
 
 /*
  * gtk_widget_class_install_stateful_action:
  * @widget_class: a #GtkWidgetClass
  * @action_name: a prefixed action name, such as "clipboard.paste"
- * @activate: callback to use when the action is activated
  * @parameter_type: (allow-none): the parameter type, or %NULL
+ * @activate: callback to use when the action is activated
  * @state_type: (allow-none): the state type, or %NULL
  * @set_state: (allow-none): callback to use when the action state
        is set, or %NULL for stateless actions
@@ -13473,8 +13476,8 @@ gtk_widget_class_install_action (GtkWidgetClass              *widget_class,
 void
 gtk_widget_class_install_stateful_action (GtkWidgetClass              *widget_class,
                                           const char                  *action_name,
-                                          GtkWidgetActionActivateFunc  activate,
                                           const char                  *parameter_type,
+                                          GtkWidgetActionActivateFunc  activate,
                                           const char                  *state_type,
                                           GtkWidgetActionSetStateFunc  set_state,
                                           GtkWidgetActionGetStateFunc  get_state)
@@ -13505,8 +13508,8 @@ gtk_widget_class_install_stateful_action (GtkWidgetClass              *widget_cl
   action = g_new0 (GtkWidgetAction, 1);
   action->owner = G_TYPE_FROM_CLASS (widget_class);
   action->name = g_strdup (action_name);
-  action->activate = activate;
   action->parameter_type = parameter_type ? g_variant_type_new (parameter_type) : NULL;
+  action->activate = activate;
   action->state_type = state_type ? g_variant_type_new (state_type) : NULL;
   action->set_state = set_state;
   action->get_state = get_state;
diff --git a/gtk/gtkwidget.h b/gtk/gtkwidget.h
index 4893910fb9..c1a0482278 100644
--- a/gtk/gtkwidget.h
+++ b/gtk/gtkwidget.h
@@ -1073,13 +1073,14 @@ typedef void (*GtkWidgetActionSetStateFunc) (GtkWidget  *widget,
 GDK_AVAILABLE_IN_ALL
 void                    gtk_widget_class_install_action (GtkWidgetClass              *widget_class,
                                                          const char                  *action_name,
+                                                         const char                  *parameter_type,
                                                          GtkWidgetActionActivateFunc  activate);
 
 GDK_AVAILABLE_IN_ALL
 void                    gtk_widget_class_install_stateful_action (GtkWidgetClass              *widget_class,
                                                                   const char                  *action_name,
-                                                                  GtkWidgetActionActivateFunc  activate,
                                                                   const char                  *parameter_type,
+                                                                  GtkWidgetActionActivateFunc  activate,
                                                                   const char                  *state_type,
                                                                   GtkWidgetActionSetStateFunc  set_state,
                                                                   GtkWidgetActionGetStateFunc  get_state);
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index f6a98efa9c..74110cc5c3 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -1176,7 +1176,7 @@ gtk_window_class_init (GtkWindowClass *klass)
    * Key bindings
    */
 
-  gtk_widget_class_install_action (widget_class, "default.activate",
+  gtk_widget_class_install_action (widget_class, "default.activate", NULL,
                                    gtk_window_activate_default_activate);
 
   binding_set = gtk_binding_set_by_class (klass);