diff --git a/gtk/gtkcssprovider.c b/gtk/gtkcssprovider.c
index a9331575f9..e1729cbe02 100644
--- a/gtk/gtkcssprovider.c
+++ b/gtk/gtkcssprovider.c
@@ -732,7 +732,6 @@
  * </refsect2>
  */
 
-typedef struct GtkCssProviderPrivate GtkCssProviderPrivate;
 typedef struct SelectorElement SelectorElement;
 typedef struct SelectorPath SelectorPath;
 typedef struct SelectorStyleInfo SelectorStyleInfo;
@@ -786,7 +785,7 @@ struct SelectorStyleInfo
   GHashTable *style;
 };
 
-struct GtkCssProviderPrivate
+struct _GtkCssProviderPrivate
 {
   GScanner *scanner;
   gchar *filename;
diff --git a/gtk/gtkcssprovider.h b/gtk/gtkcssprovider.h
index b5579bbc3e..9763897094 100644
--- a/gtk/gtkcssprovider.h
+++ b/gtk/gtkcssprovider.h
@@ -42,11 +42,12 @@ GQuark gtk_css_provider_error_quark (void);
 
 typedef struct _GtkCssProvider GtkCssProvider;
 typedef struct _GtkCssProviderClass GtkCssProviderClass;
+typedef struct _GtkCssProviderPrivate GtkCssProviderPrivate;
 
 struct _GtkCssProvider
 {
   GObject parent_instance;
-  gpointer priv;
+  GtkCssProviderPrivate *priv;
 };
 
 struct _GtkCssProviderClass