diff --git a/modules/Bio/EnsEMBL/Root.pm b/modules/Bio/EnsEMBL/Root.pm
index 9584242897801c48369ec3838b68c74cb26c57d7..808093772b4405921b5a53c80947946cace96044 100644
--- a/modules/Bio/EnsEMBL/Root.pm
+++ b/modules/Bio/EnsEMBL/Root.pm
@@ -1,8 +1,8 @@
 package Bio::EnsEMBL::Root;
 
-use Bio::Root::Root;
+use Bio::Root::RootI;
 
-@ISA = qw(Bio::Root::Root);
+@ISA = qw(Bio::Root::RootI);
 
 
 sub new{