diff --git a/winsup/mingw/ChangeLog b/winsup/mingw/ChangeLog
index 4c5de35c8..047d07c80 100644
--- a/winsup/mingw/ChangeLog
+++ b/winsup/mingw/ChangeLog
@@ -1,11 +1,17 @@
 2011-05-22  Antoine LECA  <antoinel@users.sourceforge.net>
 
-	* mingwex/isblank.c:  Fix typo in declaration.
+	* mingwex/mingw-fseek.c: The anonymous union feature for LARGE_INTEGER is
+	not always available, go the long way and use the explicit named union
+	members, which are also declared in winnt.h.
 
 2011-05-22  Antoine LECA  <antoinel@users.sourceforge.net>
 
-	* include/_mingw.h:  Define GCC system_header only if PCC is not defined.
-	* include/stdlib.h:  Fix a long-standing typo which prevented correct use of
+	* mingwex/isblank.c: Fix typo in declaration.
+
+2011-05-22  Antoine LECA  <antoinel@users.sourceforge.net>
+
+	* include/_mingw.h: Define GCC system_header only if PCC is not defined.
+	* include/stdlib.h: Fix a long-standing typo which prevented correct use of
 	the MB_CUR_MAX macro/variable when DECLSPEC is not supported and <stdlib.h>
 	is included before <ctype.h>.
 
diff --git a/winsup/mingw/mingwex/mingw-fseek.c b/winsup/mingw/mingwex/mingw-fseek.c
index b4f45cc7e..9a13957be 100644
--- a/winsup/mingw/mingwex/mingw-fseek.c
+++ b/winsup/mingw/mingwex/mingw-fseek.c
@@ -47,16 +47,16 @@ __mingw_fwrite (const void *buffer, size_t size, size_t count, FILE *fp)
       LARGE_INTEGER current_position = {{0LL}};
       __mingw_fseek_called = 0;
       fflush (fp);
-      actual_length.LowPart = GetFileSize ((HANDLE) _get_osfhandle (fileno (fp)), 
-					   &actual_length.HighPart);
-      if (actual_length.LowPart == 0xFFFFFFFF 
+      actual_length.u.LowPart = GetFileSize ((HANDLE) _get_osfhandle (fileno (fp)), 
+					     &actual_length.u.HighPart);
+      if (actual_length.u.LowPart == 0xFFFFFFFF 
           && GetLastError() != NO_ERROR )
         return -1;
-      current_position.LowPart = SetFilePointer ((HANDLE) _get_osfhandle (fileno (fp)),
-                                         	 current_position.LowPart,
-					 	 &current_position.HighPart,
+      current_position.u.LowPart = SetFilePointer ((HANDLE) _get_osfhandle (fileno (fp)),
+						   current_position.u.LowPart,
+						   &current_position.u.HighPart,
 						 FILE_CURRENT);
-      if (current_position.LowPart == 0xFFFFFFFF 
+      if (current_position.u.LowPart == 0xFFFFFFFF 
           && GetLastError() != NO_ERROR )
         return -1;
 
@@ -102,5 +102,5 @@ __mingw_fwrite (const void *buffer, size_t size, size_t count, FILE *fp)
 	    FlushFileBuffers ((HANDLE) _get_osfhandle (fileno (fp)));
 	}
     }
-  return fwrite (buffer, size, count, fp);
+  return (fwrite) (buffer, size, count, fp);
 }