diff --git a/glib/gconvert.h b/glib/gconvert.h
index d0d372150..c2e69a5a0 100644
--- a/glib/gconvert.h
+++ b/glib/gconvert.h
@@ -164,7 +164,7 @@ gchar *g_filename_to_uri   (const gchar *filename,
 GLIB_AVAILABLE_IN_ALL
 gchar *g_filename_display_name (const gchar *filename) G_GNUC_MALLOC;
 GLIB_AVAILABLE_IN_ALL
-gboolean g_get_filename_charsets (const gchar ***charsets);
+gboolean g_get_filename_charsets (const gchar ***filename_charsets);
 
 GLIB_AVAILABLE_IN_ALL
 gchar *g_filename_display_basename (const gchar *filename) G_GNUC_MALLOC;