diff --git a/radicle-crdt/src/redactable.rs b/radicle-crdt/src/redactable.rs
index 2fc83511..55e0f0cf 100644
--- a/radicle-crdt/src/redactable.rs
+++ b/radicle-crdt/src/redactable.rs
@@ -5,7 +5,7 @@ use crate::Semilattice;
 /// The "redacted" state is the top-most element and takes precedence
 /// over other states.
 ///
-/// There is no `Default` instance, as it wouldn't obbey semilattice laws.
+/// There is no `Default` instance, since this is not a "bounded" semilattice.
 ///
 /// Nb. The merge rules are such that if two redactables with different
 /// values present are merged; the result is redacted. This is the preserve
diff --git a/radicle/src/cob/thread.rs b/radicle/src/cob/thread.rs
index a092739b..cc39775d 100644
--- a/radicle/src/cob/thread.rs
+++ b/radicle/src/cob/thread.rs
@@ -1,3 +1,4 @@
+use std::cmp::Ordering;
 use std::collections::btree_map::Entry;
 use std::collections::BTreeMap;
 use std::ops::{ControlFlow, Deref, DerefMut};
@@ -42,8 +43,12 @@ impl Comment {
 }
 
 impl PartialOrd for Comment {
-    fn partial_cmp(&self, _other: &Self) -> Option<std::cmp::Ordering> {
-        None
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        if self == other {
+            Some(Ordering::Equal)
+        } else {
+            None
+        }
     }
 }