diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index e497d1f249..0610d13af9 100644
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -27,7 +27,7 @@
 #include "gtkstylecontextprivate.h"
 #include "gtkstylepropertiesprivate.h"
 #include "gtktypebuiltins.h"
-#include "gtkthemingengine.h"
+#include "gtkthemingengineprivate.h"
 #include "gtkintl.h"
 #include "gtkwidget.h"
 #include "gtkwindow.h"
diff --git a/gtk/gtkthemingengine.h b/gtk/gtkthemingengine.h
index d3f6c83cb7..8613264ec0 100644
--- a/gtk/gtkthemingengine.h
+++ b/gtk/gtkthemingengine.h
@@ -182,9 +182,6 @@ struct _GtkThemingEngineClass
 
 GType gtk_theming_engine_get_type (void) G_GNUC_CONST;
 
-void _gtk_theming_engine_set_context (GtkThemingEngine *engine,
-                                      GtkStyleContext  *context);
-
 /* function implemented in gtkcsscustomproperty.c */
 void gtk_theming_engine_register_property (const gchar            *name_space,
                                            GtkStylePropertyParser  parse_func,
diff --git a/gtk/gtkthemingengineprivate.h b/gtk/gtkthemingengineprivate.h
index 10db6f7470..02c8969eab 100644
--- a/gtk/gtkthemingengineprivate.h
+++ b/gtk/gtkthemingengineprivate.h
@@ -33,5 +33,7 @@ const GValue *_gtk_theming_engine_peek_property (GtkThemingEngine *engine,
 double        _gtk_theming_engine_get_number    (GtkThemingEngine *engine,
                                                  const char       *property_name,
                                                  double            one_hundred_percent);
+void          _gtk_theming_engine_set_context   (GtkThemingEngine *engine,
+                                                 GtkStyleContext  *context);
 
 #endif /* __GTK_THEMING_ENGINE_PRIVATE_H__ */