--- a/src/ov-struct.cc
+++ b/src/ov-struct.cc
@@ -1108,7 +1108,7 @@
   Octave_map m = map_value ();
 
   FOUR_BYTE_INT len = m.length();
-  os.write (X_CAST (char *, &len), 4);
+  os.write (reinterpret_cast<char *> (&len), 4);
   
   Octave_map::iterator i = m.begin ();
   while (i != m.end ())
@@ -1128,11 +1128,11 @@
 
 bool 
 octave_struct::load_binary (std::istream& is, bool swap,
-				 oct_mach_info::float_format fmt)
+			    oct_mach_info::float_format fmt)
 {
   bool success = true;
   FOUR_BYTE_INT len;
-  if (! is.read (X_CAST (char *, &len), 4))
+  if (! is.read (reinterpret_cast<char *> (&len), 4))
     return false;
   if (swap)
     swap_bytes<4> (&len);