diff --git a/to_rewrite.pm b/ALTree/to_rewrite.pm
similarity index 100%
rename from to_rewrite.pm
rename to ALTree/to_rewrite.pm
diff --git a/progs/altree b/progs/altree
index 2c5ece18a1b6d3a8a7463ffe89a918f6b28bf81b..0fc8c80e4957a8d717ef0c49ce043b12efe38ca8 100755
--- a/progs/altree
+++ b/progs/altree
@@ -76,7 +76,7 @@ package DataQual;
 use constant QUALI   => 0;
 use constant QUANTI => 1;
 
-use to_rewrite;
+use ALTree::to_rewrite;
 
 package main;