diff --git a/gtk/gtkcssunsetvalue.c b/gtk/gtkcssunsetvalue.c
new file mode 100644
index 0000000000..dda5c73a7e
--- /dev/null
+++ b/gtk/gtkcssunsetvalue.c
@@ -0,0 +1,102 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2014 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "gtkcssunsetvalueprivate.h"
+
+#include "gtkcssinheritvalueprivate.h"
+#include "gtkcssinitialvalueprivate.h"
+#include "gtkcssstylepropertyprivate.h"
+
+struct _GtkCssValue {
+  GTK_CSS_VALUE_BASE
+};
+
+static void
+gtk_css_value_unset_free (GtkCssValue *value)
+{
+  /* Can only happen if the unique value gets unreffed too often */
+  g_assert_not_reached ();
+}
+
+static GtkCssValue *
+gtk_css_value_unset_compute (GtkCssValue             *value,
+                             guint                    property_id,
+                             GtkStyleProviderPrivate *provider,
+			     int                      scale,
+                             GtkCssComputedValues    *values,
+                             GtkCssComputedValues    *parent_values,
+                             GtkCssDependencies      *dependencies)
+{
+  GtkCssStyleProperty *property;
+  GtkCssValue *unset_value;
+  
+  property = _gtk_css_style_property_lookup_by_id (property_id);
+
+  if (_gtk_css_style_property_is_inherit (property))
+    unset_value = _gtk_css_inherit_value_get ();
+  else
+    unset_value = _gtk_css_initial_value_get ();
+
+  return _gtk_css_value_compute (unset_value,
+                                 property_id,
+                                 provider,
+				 scale,
+                                 values,
+                                 parent_values,
+                                 dependencies);
+}
+
+static gboolean
+gtk_css_value_unset_equal (const GtkCssValue *value1,
+                           const GtkCssValue *value2)
+{
+  return TRUE;
+}
+
+static GtkCssValue *
+gtk_css_value_unset_transition (GtkCssValue *start,
+                                GtkCssValue *end,
+                                guint        property_id,
+                                double       progress)
+{
+  return NULL;
+}
+
+static void
+gtk_css_value_unset_print (const GtkCssValue *value,
+                             GString           *string)
+{
+  g_string_append (string, "unset");
+}
+
+static const GtkCssValueClass GTK_CSS_VALUE_UNSET = {
+  gtk_css_value_unset_free,
+  gtk_css_value_unset_compute,
+  gtk_css_value_unset_equal,
+  gtk_css_value_unset_transition,
+  gtk_css_value_unset_print
+};
+
+static GtkCssValue unset = { &GTK_CSS_VALUE_UNSET, 1 };
+
+GtkCssValue *
+_gtk_css_unset_value_new (void)
+{
+  return _gtk_css_value_ref (&unset);
+}
diff --git a/gtk/gtkcssunsetvalueprivate.h b/gtk/gtkcssunsetvalueprivate.h
new file mode 100644
index 0000000000..830bcbca85
--- /dev/null
+++ b/gtk/gtkcssunsetvalueprivate.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright © 2014 Red Hat Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte@gnome.org>
+ */
+
+#ifndef __GTK_CSS_UNSET_VALUE_PRIVATE_H__
+#define __GTK_CSS_UNSET_VALUE_PRIVATE_H__
+
+#include "gtkcssvalueprivate.h"
+
+G_BEGIN_DECLS
+
+GtkCssValue *   _gtk_css_unset_value_new            (void);
+
+G_END_DECLS
+
+#endif /* __GTK_CSS_UNSET_VALUE_PRIVATE_H__ */