diff --git a/jode/addHeader.pl b/jode/addHeader.pl
index a012a22..66e74ba 100755
--- a/jode/addHeader.pl
+++ b/jode/addHeader.pl
@@ -23,7 +23,7 @@
 
 for (@ARGV) {
     my $file = $_;
-    $file =~ m=([^/]*)\.java$= or do {
+    $file =~ m=([^/]*)\.java(\.in)?$= or do {
 	print STDERR "$file is not a java file";
 	next;
     };