diff --git a/ChangeLog b/ChangeLog
index 4e5a9588a..6adac39f1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-06-05  Johan Dahlin  <jdahlin@async.com.br>
+
+	* gtk/gtkbuilder.h (enum): Add the new version mismatch error
+	constant to the end of the list, to avoid breaking the stable ABI
+
 2008-06-05  Michael Natterer  <mitch@imendio.com>
 
 	* configure.in: add -DATK_DISABLE_SINGLE_INCLUDES to CPPFLAGS.
diff --git a/gtk/gtkbuilder.h b/gtk/gtkbuilder.h
index b266bc6bc..83ec708b5 100644
--- a/gtk/gtkbuilder.h
+++ b/gtk/gtkbuilder.h
@@ -44,14 +44,14 @@ typedef struct _GtkBuilderPrivate GtkBuilderPrivate;
 
 typedef enum
 {
-  GTK_BUILDER_ERROR_VERSION_MISMATCH,
   GTK_BUILDER_ERROR_INVALID_TYPE_FUNCTION,
   GTK_BUILDER_ERROR_UNHANDLED_TAG,
   GTK_BUILDER_ERROR_MISSING_ATTRIBUTE,
   GTK_BUILDER_ERROR_INVALID_ATTRIBUTE,
   GTK_BUILDER_ERROR_INVALID_TAG,
   GTK_BUILDER_ERROR_MISSING_PROPERTY_VALUE,
-  GTK_BUILDER_ERROR_INVALID_VALUE
+  GTK_BUILDER_ERROR_INVALID_VALUE,
+  GTK_BUILDER_ERROR_VERSION_MISMATCH
 } GtkBuilderError;
 
 GQuark gtk_builder_error_quark (void);