diff --git a/gtk/gtkalignment.h b/gtk/gtkalignment.h
index 498ad93c45..cc4d96da6e 100644
--- a/gtk/gtkalignment.h
+++ b/gtk/gtkalignment.h
@@ -53,7 +53,7 @@ struct _GtkAlignment
 {
   GtkBin bin;
 
-  /* <private> */
+  /*< private >*/
   GtkAlignmentPrivate *priv;
 };
 
diff --git a/gtk/gtkcellrenderer.h b/gtk/gtkcellrenderer.h
index be230ca4af..44362778ce 100644
--- a/gtk/gtkcellrenderer.h
+++ b/gtk/gtkcellrenderer.h
@@ -60,7 +60,7 @@ struct _GtkCellRenderer
 {
   GInitiallyUnowned parent_instance;
 
-  /* <private> */
+  /*< private >*/
   GtkCellRendererPrivate *priv;
 };
 
diff --git a/gtk/gtkcellrenderercombo.h b/gtk/gtkcellrenderercombo.h
index 58bdf98338..7c645bf360 100644
--- a/gtk/gtkcellrenderercombo.h
+++ b/gtk/gtkcellrenderercombo.h
@@ -44,7 +44,7 @@ struct _GtkCellRendererCombo
 {
   GtkCellRendererText parent;
 
-  /* <private> */
+  /*< private >*/
   GtkCellRendererComboPrivate *priv;
 };
 
diff --git a/gtk/gtkcellrendererspin.h b/gtk/gtkcellrendererspin.h
index b942b360f3..a39880184b 100644
--- a/gtk/gtkcellrendererspin.h
+++ b/gtk/gtkcellrendererspin.h
@@ -43,7 +43,7 @@ struct _GtkCellRendererSpin
 {
   GtkCellRendererText parent;
 
-  /* <private> */
+  /*< private >*/
   GtkCellRendererSpinPrivate *priv;
 };
 
diff --git a/gtk/gtkcellrendererspinner.h b/gtk/gtkcellrendererspinner.h
index 84a3077ea4..5877ae3796 100644
--- a/gtk/gtkcellrendererspinner.h
+++ b/gtk/gtkcellrendererspinner.h
@@ -46,7 +46,7 @@ struct _GtkCellRendererSpinner
 {
   GtkCellRenderer                parent;
 
-  /* <private> */
+  /*< private >*/
   GtkCellRendererSpinnerPrivate *priv;
 };
 
diff --git a/gtk/gtkcheckmenuitem.h b/gtk/gtkcheckmenuitem.h
index f930768bc7..30b1947861 100644
--- a/gtk/gtkcheckmenuitem.h
+++ b/gtk/gtkcheckmenuitem.h
@@ -53,7 +53,7 @@ struct _GtkCheckMenuItem
 {
   GtkMenuItem menu_item;
 
-  /* <private> */
+  /*< private >*/
   GtkCheckMenuItemPrivate *priv;
 };
 
diff --git a/gtk/gtkcolorseldialog.h b/gtk/gtkcolorseldialog.h
index 0b4f0aaaa7..41d6807d84 100644
--- a/gtk/gtkcolorseldialog.h
+++ b/gtk/gtkcolorseldialog.h
@@ -54,7 +54,7 @@ struct _GtkColorSelectionDialog
 {
   GtkDialog parent_instance;
 
-  /* <private> */
+  /*< private >*/
   GtkColorSelectionDialogPrivate *priv;
 };
 
diff --git a/gtk/gtkcomboboxtext.h b/gtk/gtkcomboboxtext.h
index 50ebcb501c..ae08d2d40e 100644
--- a/gtk/gtkcomboboxtext.h
+++ b/gtk/gtkcomboboxtext.h
@@ -40,7 +40,7 @@ typedef struct _GtkComboBoxTextClass        GtkComboBoxTextClass;
 
 struct _GtkComboBoxText
 {
-  /* <private> */
+  /*< private >*/
   GtkComboBox parent_instance;
 
   GtkComboBoxTextPrivate *priv;
diff --git a/gtk/gtkfixed.h b/gtk/gtkfixed.h
index 2703c6b1c3..00569c3f2b 100644
--- a/gtk/gtkfixed.h
+++ b/gtk/gtkfixed.h
@@ -53,7 +53,7 @@ struct _GtkFixed
 {
   GtkContainer container;
 
-  /* <private> */
+  /*< private >*/
   GtkFixedPrivate *priv;
 };
 
diff --git a/gtk/gtkfontsel.h b/gtk/gtkfontsel.h
index 7ec2b354c6..e481b6f81b 100644
--- a/gtk/gtkfontsel.h
+++ b/gtk/gtkfontsel.h
@@ -70,7 +70,7 @@ struct _GtkFontSelection
 {
   GtkVBox parent_instance;
 
-  /* <private> */
+  /*< private >*/
   GtkFontSelectionPrivate *priv;
 };
 
diff --git a/gtk/gtkframe.h b/gtk/gtkframe.h
index 83b1c4ed3b..d8485f109a 100644
--- a/gtk/gtkframe.h
+++ b/gtk/gtkframe.h
@@ -53,7 +53,7 @@ struct _GtkFrame
 {
   GtkBin bin;
 
-  /* <private> */
+  /*< private >*/
   GtkFramePrivate *priv;
 };
 
diff --git a/gtk/gtkgrid.h b/gtk/gtkgrid.h
index 860658a0b7..530ef0be25 100644
--- a/gtk/gtkgrid.h
+++ b/gtk/gtkgrid.h
@@ -45,7 +45,7 @@ typedef struct _GtkGridClass         GtkGridClass;
 
 struct _GtkGrid
 {
-  /* <private> */
+  /*< private >*/
   GtkContainer container;
 
   GtkGridPrivate *priv;
diff --git a/gtk/gtkhandlebox.h b/gtk/gtkhandlebox.h
index 174ce393a9..bb12afa092 100644
--- a/gtk/gtkhandlebox.h
+++ b/gtk/gtkhandlebox.h
@@ -57,7 +57,7 @@ struct _GtkHandleBox
 {
   GtkBin bin;
 
-  /* <private> */
+  /*< private >*/
   GtkHandleBoxPrivate *priv;
 };
 
diff --git a/gtk/gtkhsv.h b/gtk/gtkhsv.h
index fda2861f11..ae6bdb3c9d 100644
--- a/gtk/gtkhsv.h
+++ b/gtk/gtkhsv.h
@@ -56,7 +56,7 @@ struct _GtkHSV
 {
   GtkWidget parent_instance;
 
-  /* <private> */
+  /*< private >*/
   GtkHSVPrivate *priv;
 };
 
diff --git a/gtk/gtkiconfactory.h b/gtk/gtkiconfactory.h
index a9478a0f3b..1019cf6b41 100644
--- a/gtk/gtkiconfactory.h
+++ b/gtk/gtkiconfactory.h
@@ -53,7 +53,7 @@ struct _GtkIconFactory
 {
   GObject parent_instance;
 
-  /* <private> */
+  /*< private >*/
   GtkIconFactoryPrivate *priv;
 };
 
diff --git a/gtk/gtkiconview.h b/gtk/gtkiconview.h
index 485a0df6b8..cf769b6d59 100644
--- a/gtk/gtkiconview.h
+++ b/gtk/gtkiconview.h
@@ -81,7 +81,7 @@ struct _GtkIconView
 {
   GtkContainer parent;
 
-  /* <private> */
+  /*< private >*/
   GtkIconViewPrivate *priv;
 };
 
diff --git a/gtk/gtkimage.h b/gtk/gtkimage.h
index f3f785c154..2e6bcc2814 100644
--- a/gtk/gtkimage.h
+++ b/gtk/gtkimage.h
@@ -135,7 +135,7 @@ struct _GtkImage
 {
   GtkMisc misc;
 
-  /* <private> */
+  /*< private >*/
   GtkImagePrivate *priv;
 };
 
diff --git a/gtk/gtkimcontextsimple.h b/gtk/gtkimcontextsimple.h
index 828983c8da..b949755d1b 100644
--- a/gtk/gtkimcontextsimple.h
+++ b/gtk/gtkimcontextsimple.h
@@ -52,7 +52,7 @@ struct _GtkIMContextSimple
 {
   GtkIMContext object;
 
-  /* <private> */
+  /*< private >*/
   GtkIMContextSimplePrivate *priv;
 };
 
diff --git a/gtk/gtkimmulticontext.h b/gtk/gtkimmulticontext.h
index 1ed6533d3b..574f793897 100644
--- a/gtk/gtkimmulticontext.h
+++ b/gtk/gtkimmulticontext.h
@@ -45,7 +45,7 @@ struct _GtkIMMulticontext
 {
   GtkIMContext object;
 
-  /* <private> */
+  /*< private >*/
   GtkIMMulticontextPrivate *priv;
 };
 
diff --git a/gtk/gtkinvisible.h b/gtk/gtkinvisible.h
index 830974d888..2d68fd8210 100644
--- a/gtk/gtkinvisible.h
+++ b/gtk/gtkinvisible.h
@@ -51,7 +51,7 @@ struct _GtkInvisible
 {
   GtkWidget widget;
 
-  /* <private> */
+  /*< private >*/
   GtkInvisiblePrivate *priv;
 };
 
diff --git a/gtk/gtklayout.h b/gtk/gtklayout.h
index 5c4f8b284e..61ba27f6e9 100644
--- a/gtk/gtklayout.h
+++ b/gtk/gtklayout.h
@@ -58,7 +58,7 @@ struct _GtkLayout
 {
   GtkContainer container;
 
-  /* <private> */
+  /*< private >*/
   GtkLayoutPrivate *priv;
 };
 
diff --git a/gtk/gtkmenubar.h b/gtk/gtkmenubar.h
index 2120945180..bc1f66c49e 100644
--- a/gtk/gtkmenubar.h
+++ b/gtk/gtkmenubar.h
@@ -53,7 +53,7 @@ struct _GtkMenuBar
 {
   GtkMenuShell menu_shell;
 
-  /* <private> */
+  /*< private >*/
   GtkMenuBarPrivate *priv;
 };
 
diff --git a/gtk/gtkmisc.h b/gtk/gtkmisc.h
index fe6b7c9df8..1ca83091be 100644
--- a/gtk/gtkmisc.h
+++ b/gtk/gtkmisc.h
@@ -53,7 +53,7 @@ struct _GtkMisc
 {
   GtkWidget widget;
 
-  /* <private> */
+  /*< private >*/
   GtkMiscPrivate *priv;
 };
 
diff --git a/gtk/gtknotebook.h b/gtk/gtknotebook.h
index e83a7c58a3..d69d4f0835 100644
--- a/gtk/gtknotebook.h
+++ b/gtk/gtknotebook.h
@@ -58,7 +58,7 @@ typedef struct _GtkNotebookClass         GtkNotebookClass;
 
 struct _GtkNotebook
 {
-  /* <private> */
+  /*< private >*/
   GtkContainer container;
 
   GtkNotebookPrivate *priv;
diff --git a/gtk/gtkprinter.h b/gtk/gtkprinter.h
index c5bacb35f0..ba7506ad32 100644
--- a/gtk/gtkprinter.h
+++ b/gtk/gtkprinter.h
@@ -68,7 +68,7 @@ struct _GtkPrinter
 {
   GObject parent_instance;
 
-  /* <private> */
+  /*< private >*/
   GtkPrinterPrivate *priv;
 };
 
diff --git a/gtk/gtkprintoperation.h b/gtk/gtkprintoperation.h
index d4ad22530b..bba15cc632 100644
--- a/gtk/gtkprintoperation.h
+++ b/gtk/gtkprintoperation.h
@@ -79,7 +79,7 @@ struct _GtkPrintOperation
 {
   GObject parent_instance;
 
-  /* <private> */
+  /*< private >*/
   GtkPrintOperationPrivate *priv;
 };
 
diff --git a/gtk/gtkprintunixdialog.h b/gtk/gtkprintunixdialog.h
index 0cd410ee6c..2c0656676c 100644
--- a/gtk/gtkprintunixdialog.h
+++ b/gtk/gtkprintunixdialog.h
@@ -46,7 +46,7 @@ struct _GtkPrintUnixDialog
 {
   GtkDialog parent_instance;
 
-  /* <private> */
+  /*< private >*/
   GtkPrintUnixDialogPrivate *priv;
 };
 
diff --git a/gtk/gtkprogressbar.h b/gtk/gtkprogressbar.h
index 554d169375..be14b7c66e 100644
--- a/gtk/gtkprogressbar.h
+++ b/gtk/gtkprogressbar.h
@@ -51,7 +51,7 @@ struct _GtkProgressBar
 {
   GtkWidget parent;
 
-  /* <private> */
+  /*< private >*/
   GtkProgressBarPrivate *priv;
 };
 
diff --git a/gtk/gtkradiobutton.h b/gtk/gtkradiobutton.h
index b9fd6a43e5..2fe40c69af 100644
--- a/gtk/gtkradiobutton.h
+++ b/gtk/gtkradiobutton.h
@@ -53,7 +53,7 @@ struct _GtkRadioButton
 {
   GtkCheckButton check_button;
 
-  /* <private> */
+  /*< private >*/
   GtkRadioButtonPrivate *priv;
 };
 
diff --git a/gtk/gtkradiomenuitem.h b/gtk/gtkradiomenuitem.h
index 315ac021f7..bab8380b00 100644
--- a/gtk/gtkradiomenuitem.h
+++ b/gtk/gtkradiomenuitem.h
@@ -53,7 +53,7 @@ struct _GtkRadioMenuItem
 {
   GtkCheckMenuItem check_menu_item;
 
-  /* <private> */
+  /*< private >*/
   GtkRadioMenuItemPrivate *priv;
 };
 
diff --git a/gtk/gtkrecentchoosermenu.h b/gtk/gtkrecentchoosermenu.h
index a595da7ea1..36c718e103 100644
--- a/gtk/gtkrecentchoosermenu.h
+++ b/gtk/gtkrecentchoosermenu.h
@@ -45,7 +45,7 @@ struct _GtkRecentChooserMenu
 {
   GtkMenu parent_instance;
 
-  /* <private> */
+  /*< private >*/
   GtkRecentChooserMenuPrivate *priv;
 };
 
diff --git a/gtk/gtkrecentchooserwidget.h b/gtk/gtkrecentchooserwidget.h
index d8b55c9810..dce2805975 100644
--- a/gtk/gtkrecentchooserwidget.h
+++ b/gtk/gtkrecentchooserwidget.h
@@ -46,7 +46,7 @@ struct _GtkRecentChooserWidget
 {
   GtkVBox parent_instance;
 
-  /* <private> */
+  /*< private >*/
   GtkRecentChooserWidgetPrivate *priv;
 };
 
diff --git a/gtk/gtkrecentmanager.h b/gtk/gtkrecentmanager.h
index 9fdb942309..41e7c841ba 100644
--- a/gtk/gtkrecentmanager.h
+++ b/gtk/gtkrecentmanager.h
@@ -91,7 +91,7 @@ struct _GtkRecentData
  */
 struct _GtkRecentManager
 {
-  /* <private> */
+  /*< private >*/
   GObject parent_instance;
 
   GtkRecentManagerPrivate *priv;
diff --git a/gtk/gtkruler.h b/gtk/gtkruler.h
index 586b9fc5ee..491748c26c 100644
--- a/gtk/gtkruler.h
+++ b/gtk/gtkruler.h
@@ -67,7 +67,7 @@ struct _GtkRuler
 {
   GtkWidget widget;
 
-  /* <private> */
+  /*< private >*/
   GtkRulerPrivate *priv;
 };
 
diff --git a/gtk/gtkscale.h b/gtk/gtkscale.h
index 7da4003e87..9a585253b7 100644
--- a/gtk/gtkscale.h
+++ b/gtk/gtkscale.h
@@ -53,7 +53,7 @@ struct _GtkScale
 {
   GtkRange range;
 
-  /* <private> */
+  /*< private >*/
   GtkScalePrivate *priv;
 };
 
diff --git a/gtk/gtksizegroup.h b/gtk/gtksizegroup.h
index ff1b0b10f9..d3c91119b3 100644
--- a/gtk/gtksizegroup.h
+++ b/gtk/gtksizegroup.h
@@ -45,7 +45,7 @@ struct _GtkSizeGroup
 {
   GObject parent_instance;
 
-  /* <private> */
+  /*< private >*/
   GtkSizeGroupPrivate *priv;
 };
 
diff --git a/gtk/gtkspinbutton.h b/gtk/gtkspinbutton.h
index d1b1405e4a..f061f29028 100644
--- a/gtk/gtkspinbutton.h
+++ b/gtk/gtkspinbutton.h
@@ -77,7 +77,7 @@ struct _GtkSpinButton
 {
   GtkEntry entry;
 
-  /* <private> */
+  /*< private >*/
   GtkSpinButtonPrivate *priv;
 };
 
diff --git a/gtk/gtkspinner.h b/gtk/gtkspinner.h
index ddf7610333..123cd4fe79 100644
--- a/gtk/gtkspinner.h
+++ b/gtk/gtkspinner.h
@@ -48,7 +48,7 @@ struct _GtkSpinner
 {
   GtkWidget parent;
 
-  /* <private> */
+  /*< private >*/
   GtkSpinnerPrivate *priv;
 };
 
diff --git a/gtk/gtkstatusbar.h b/gtk/gtkstatusbar.h
index a69aaf5cb2..4de1f90ddd 100644
--- a/gtk/gtkstatusbar.h
+++ b/gtk/gtkstatusbar.h
@@ -52,7 +52,7 @@ struct _GtkStatusbar
 {
   GtkHBox parent_widget;
 
-  /* <private> */
+  /*< private >*/
   GtkStatusbarPrivate *priv;
 };
 
diff --git a/gtk/gtktable.h b/gtk/gtktable.h
index e0f20c12ff..4158a093c1 100644
--- a/gtk/gtktable.h
+++ b/gtk/gtktable.h
@@ -55,7 +55,7 @@ struct _GtkTable
 {
   GtkContainer container;
 
-  /* <private> */
+  /*< private >*/
   GtkTablePrivate *priv;
 };
 
diff --git a/gtk/gtktearoffmenuitem.h b/gtk/gtktearoffmenuitem.h
index 80a4dad65a..542e2c61ee 100644
--- a/gtk/gtktearoffmenuitem.h
+++ b/gtk/gtktearoffmenuitem.h
@@ -53,7 +53,7 @@ struct _GtkTearoffMenuItem
 {
   GtkMenuItem menu_item;
 
-  /* <private> */
+  /*< private >*/
   GtkTearoffMenuItemPrivate *priv;
 };
 
diff --git a/gtk/gtktreeview.h b/gtk/gtktreeview.h
index 2dd137b893..4c609d9d42 100644
--- a/gtk/gtktreeview.h
+++ b/gtk/gtktreeview.h
@@ -62,7 +62,7 @@ struct _GtkTreeView
 {
   GtkContainer parent;
 
-  /* <private> */
+  /*< private >*/
   GtkTreeViewPrivate *priv;
 };
 
diff --git a/gtk/gtkviewport.h b/gtk/gtkviewport.h
index fcc0833300..c1d9ce4307 100644
--- a/gtk/gtkviewport.h
+++ b/gtk/gtkviewport.h
@@ -55,7 +55,7 @@ struct _GtkViewport
 {
   GtkBin bin;
 
-  /* <private> */
+  /*< private >*/
   GtkViewportPrivate *priv;
 };