diff --git a/gobject/gvaluetypes.c b/gobject/gvaluetypes.c
index ac857bfd9..e3406aa71 100644
--- a/gobject/gvaluetypes.c
+++ b/gobject/gvaluetypes.c
@@ -686,7 +686,7 @@ g_value_set_pointer (GValue  *value,
 }
 
 gpointer
-g_value_get_pointer (GValue *value)
+g_value_get_pointer (const GValue *value)
 {
   g_return_val_if_fail (G_IS_VALUE_POINTER (value), NULL);
 
diff --git a/gobject/gvaluetypes.h b/gobject/gvaluetypes.h
index 32ba50d50..9f0b143c2 100644
--- a/gobject/gvaluetypes.h
+++ b/gobject/gvaluetypes.h
@@ -80,7 +80,7 @@ gchar*		g_value_get_string		(const GValue	*value);
 gchar*		g_value_dup_string		(const GValue	*value);
 void            g_value_set_pointer     	(GValue         *value,
 						 gpointer        v_pointer);
-gpointer        g_value_get_pointer     	(GValue         *value);
+gpointer        g_value_get_pointer     	(const GValue   *value);