diff --git a/src/ontology/ehdaa2-edit.obo b/src/ontology/ehdaa2-edit.obo
index 73387c3..072c76c 100644
--- a/src/ontology/ehdaa2-edit.obo
+++ b/src/ontology/ehdaa2-edit.obo
@@ -2013,7 +2013,6 @@ is_a: CS:0 ! Carnegie stage
 id: HsapDv:0000007
 name: CS03
 namespace: carnegie_stage
-is_a: CARO:0000054 ! anatomical group
 is_a: CS:0 ! Carnegie stage
 
 [Term]