diff --git a/basis/PackReal32Boxed.sml b/basis/PackReal32Boxed.sml
index c3c45aa5..aa77975d 100644
--- a/basis/PackReal32Boxed.sml
+++ b/basis/PackReal32Boxed.sml
@@ -1,24 +1,24 @@
 (*
     Title:      Standard Basis Library: Pack Real structures for 32-bit platforms
     Author:     David Matthews
     Copyright   David Matthews 2021
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public
     Licence version 2.1 as published by the Free Software Foundation.
     
     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
     Licence along with this library; if not, write to the Free Software
     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *)
 
 
 structure PackReal32Big: PACK_REAL =
-    PackRealBoxed(type realType = real val isBigEndian = true val realSize = 0w4)
+    PackRealBoxed(type realType = Real32.real val isBigEndian = true val realSize = 0w4)
 and PackReal32Little: PACK_REAL =
-    PackRealBoxed(type realType = real val isBigEndian = false val realSize = 0w4);
+    PackRealBoxed(type realType = Real32.real val isBigEndian = false val realSize = 0w4);