diff --git a/gdk/x11/gdkdisplay-x11.c b/gdk/x11/gdkdisplay-x11.c
index 92a3e7dbf1..e895a07867 100644
--- a/gdk/x11/gdkdisplay-x11.c
+++ b/gdk/x11/gdkdisplay-x11.c
@@ -1831,7 +1831,7 @@ gdk_x11_display_has_pending (GdkDisplay *display)
 
 /**
  * gdk_x11_display_get_default_group:
- * @display: a #GdkDisplay
+ * @display: (type GdkX11Display): a #GdkDisplay
  *
  * Returns the default group leader surface for all toplevel surfaces
  * on @display. This surface is implicitly created by GDK.
@@ -2773,7 +2773,7 @@ gdk_x11_display_get_max_request_size (GdkDisplay *display)
 
 /**
  * gdk_x11_display_get_screen:
- * @display: a #GdkX11Display
+ * @display: (type GdkX11Display): a #GdkX11Display
  *
  * Retrieves the #GdkX11Screen of the @display.
  *
@@ -2845,7 +2845,7 @@ gdk_x11_display_get_monitors (GdkDisplay *display)
 
 /**
  * gdk_x11_display_get_primary_monitor:
- * @self: a #GdkDisplay
+ * @display: (type GdkX11Display): a #GdkDisplay
  *
  * Gets the primary monitor for the display.
  *
@@ -2968,7 +2968,7 @@ gdk_x11_display_class_init (GdkX11DisplayClass * class)
 
   /**
    * GdkX11Display::xevent:
-   * @display: the object on which the signal is emitted
+   * @display: (type GdkX11Display): the object on which the signal is emitted
    * @xevent: a pointer to the XEvent to process
    *
    * The ::xevent signal is a low level signal that is emitted
diff --git a/gdk/x11/gdkglcontext-x11.c b/gdk/x11/gdkglcontext-x11.c
index d3f6d7df42..d628dbcaf2 100644
--- a/gdk/x11/gdkglcontext-x11.c
+++ b/gdk/x11/gdkglcontext-x11.c
@@ -1511,7 +1511,7 @@ gdk_x11_display_make_gl_context_current (GdkDisplay   *display,
 
 /**
  * gdk_x11_display_get_glx_version:
- * @display: a #GdkDisplay
+ * @display: (type GdkX11Display): a #GdkDisplay
  * @major: (out): return location for the GLX major version
  * @minor: (out): return location for the GLX minor version
  *
diff --git a/gdk/x11/gdkmonitor-x11.c b/gdk/x11/gdkmonitor-x11.c
index 8d7a4e5807..3227e0bd1b 100644
--- a/gdk/x11/gdkmonitor-x11.c
+++ b/gdk/x11/gdkmonitor-x11.c
@@ -63,7 +63,7 @@ gdk_monitor_has_fullscreen_window (GdkMonitor *monitor)
 
 /**
  * gdk_x11_monitor_get_workarea:
- * @monitor: a #GdkMonitor
+ * @monitor: (type GdkX11Monitor): a #GdkMonitor
  * @workarea: (out): a #GdkRectangle to be filled with
  *     the monitor workarea
  *
@@ -114,6 +114,10 @@ gdk_x11_monitor_class_init (GdkX11MonitorClass *class)
 {
 }
 
+/**
+ * gdk_x11_monitor_get_output:
+ * @monitor: (type GdkX11Monitor): a #GdkMonitor
+ */
 XID
 gdk_x11_monitor_get_output (GdkMonitor *monitor)
 {
diff --git a/gdk/x11/gdksurface-x11.c b/gdk/x11/gdksurface-x11.c
index 9ca81d8e9f..d797368d79 100644
--- a/gdk/x11/gdksurface-x11.c
+++ b/gdk/x11/gdksurface-x11.c
@@ -3270,7 +3270,7 @@ gdk_x11_surface_unfullscreen (GdkSurface *surface)
 
 /**
  * gdk_x11_surface_get_group:
- * @surface: The #GdkSurface
+ * @surface: (type GdkX11Surface): The #GdkSurface
  *
  * Returns the group this surface belongs to.
  *
diff --git a/gdk/x11/gdkx11display.h b/gdk/x11/gdkx11display.h
index 299864d217..5c6a0c36e7 100644
--- a/gdk/x11/gdkx11display.h
+++ b/gdk/x11/gdkx11display.h
@@ -106,7 +106,7 @@ GDK_AVAILABLE_IN_ALL
 GdkX11Screen *gdk_x11_display_get_screen (GdkDisplay *display);
 
 GDK_AVAILABLE_IN_ALL
-GdkMonitor * gdk_x11_display_get_primary_monitor (GdkDisplay *self);
+GdkMonitor * gdk_x11_display_get_primary_monitor (GdkDisplay *display);
 
 GDK_AVAILABLE_IN_ALL
 void        gdk_x11_display_grab              (GdkDisplay *display);
diff --git a/gsk/gskrendernodeimpl.c b/gsk/gskrendernodeimpl.c
index 0cbf3b4713..3b99ade5d3 100644
--- a/gsk/gskrendernodeimpl.c
+++ b/gsk/gskrendernodeimpl.c
@@ -3643,7 +3643,7 @@ gsk_text_node_peek_color (GskRenderNode *node)
 
 /**
  * gsk_text_node_peek_font:
- * @node: The #GskRenderNode
+ * @node: (type GskTextNode): The #GskRenderNode
  *
  * Returns the font used by the text @node.
  *
diff --git a/gtk/gtkbuilderscope.c b/gtk/gtkbuilderscope.c
index 5612dbdfbe..785d590122 100644
--- a/gtk/gtkbuilderscope.c
+++ b/gtk/gtkbuilderscope.c
@@ -412,7 +412,7 @@ gtk_builder_cscope_init (GtkBuilderCScope *self)
  * Calling this function is only necessary if you want to add custom
  * callbacks via gtk_builder_cscope_add_callback_symbol().
  *
- * Returns: (transfer full): a new #GtkBuilderCScope
+ * Returns: (transfer full) (type GtkBuilderCScope): a new #GtkBuilderCScope
  **/
 GtkBuilderScope *
 gtk_builder_cscope_new (void)