--- a/src/fieldempty.cc
+++ b/src/fieldempty.cc
@@ -20,7 +20,7 @@
 #include <octave/oct.h>
 #include <octave/ov-struct.h>
 
-DEFUN_DLD (fieldempty, args, , 
+DEFUN_DLD (fieldempty, args, ,
   "-*- texinfo -*-\n\
 @deftypefn {Loadable Function} {} fieldempty (@var{s}, @var{name})\n\
 Returns a logical array with same dimensions as structure @var{s}, indicating where field @var{name} is empty.\n\
@@ -68,9 +68,9 @@
   for (octave_idx_type i = 0; i < numel; i++)
     {
       if (c(i).numel ())
-	retval(i) = false;
+        retval(i) = false;
       else
-	retval(i) = true;
+        retval(i) = true;
     }
 
   return octave_value (retval);