--- a/src/ov-re-diag.cc
+++ b/src/ov-re-diag.cc
@@ -187,18 +187,18 @@
   if (save_as_floats)
     {
       if (m.too_large_for_float ())
-	{
-	  warning ("save: some values too large to save as floats --");
-	  warning ("save: saving as doubles instead");
-	}
+        {
+          warning ("save: some values too large to save as floats --");
+          warning ("save: saving as doubles instead");
+        }
       else
-	st = LS_FLOAT;
+        st = LS_FLOAT;
     }
   else if (matrix.length () > 8192) // FIXME -- make this configurable.
     {
       double max_val, min_val;
       if (m.all_integers (max_val, min_val))
-	st = get_save_type (max_val, min_val);
+        st = get_save_type (max_val, min_val);
     }
 
   const double *mtmp = m.data ();
@@ -209,7 +209,7 @@
 
 bool 
 octave_diag_matrix::load_binary (std::istream& is, bool swap,
-				 oct_mach_info::float_format fmt)
+                                 oct_mach_info::float_format fmt)
 {
   int32_t r, c;
   char tmp;