diff --git a/misc-scripts/xref_mapping/xref_mapper.pl b/misc-scripts/xref_mapping/xref_mapper.pl
index ca54a116f3c7a97a3bbe34cfd7c67d40c1fce66a..bd7ac92c4bdb2865bccb2a254ebc9828617615fb 100644
--- a/misc-scripts/xref_mapping/xref_mapper.pl
+++ b/misc-scripts/xref_mapping/xref_mapper.pl
@@ -140,6 +140,8 @@ use XrefMapper::db;
  
 use vars qw(@INC);
  
+$| = 1;
+
 my $file;
 my $verbose;
 my $dumpcheck=undef;