diff --git a/src/tools/copyright.pl b/src/tools/copyright.pl
new file mode 100755
index d78a8d8..b8b8761
*** a/src/tools/copyright.pl
--- b/src/tools/copyright.pl
*************** sub wanted {
*** 51,55 ****
      untie @lines;
  }
  
! print "Manually update doc/src/sgml/legal.sgml and src/interfaces/libpq/libpq.rc.in too\n";
  
--- 51,56 ----
      untie @lines;
  }
  
! print "Manually update doc/src/sgml/legal.sgml and src/interfaces/libpq/libpq.rc.in too.\n";
! print "Also update ./COPYRIGHT and doc/src/sgml/legal.sgml in all back branches.\n";