diff --git a/ChangeLog b/ChangeLog
index 347d9762c..1a96a55d0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2021-07-05  Werner Lemberg  <wl@gnu.org>
+
+	* src/base/ftlcdfil.c (FT_Library_SetLcdGeometry): Fix argument.
+
+	Reported by Hin-Tak.
+
 2021-07-03  Werner Lemberg  <wl@gnu.org>
 
 	* meson_options.txt: Sort alphabetically; no final full stops.
diff --git a/src/base/ftlcdfil.c b/src/base/ftlcdfil.c
index 45e5114ed..488b913e6 100644
--- a/src/base/ftlcdfil.c
+++ b/src/base/ftlcdfil.c
@@ -357,7 +357,7 @@
 
   FT_EXPORT_DEF( FT_Error )
   FT_Library_SetLcdGeometry( FT_Library  library,
-                             FT_Vector*  sub )
+                             FT_Vector   sub[3] )
   {
     FT_UNUSED( library );
     FT_UNUSED( sub );