diff --git a/src/derived/slot.rs b/src/derived/slot.rs
index 6d96c3f..91684c8 100644
--- a/src/derived/slot.rs
+++ b/src/derived/slot.rs
@@ -622,9 +622,7 @@ where
     /// True if this memo should still be considered constant
     /// (presuming it ever was).
     fn is_still_constant(&self, db: &DB) -> bool {
-        let last_changed = db
-            .salsa_runtime()
-            .durability_last_changed_revision(self.durability);
+        let last_changed = db.salsa_runtime().last_changed_revision(self.durability);
         debug!(
             "is_still_constant(last_changed={:?} <= verified_at={:?}) = {:?}",
             last_changed,
diff --git a/src/runtime.rs b/src/runtime.rs
index 202b032..530e1b7 100644
--- a/src/runtime.rs
+++ b/src/runtime.rs
@@ -166,7 +166,7 @@ where
     /// value may have changed, which allows us to skip walking its
     /// dependencies.
     #[inline]
-    pub(crate) fn durability_last_changed_revision(&self, d: Durability) -> Revision {
+    pub(crate) fn last_changed_revision(&self, d: Durability) -> Revision {
         self.shared_state.revisions[d.index()].load()
     }