diff --git a/src/util/taproot.rs b/src/util/taproot.rs
index eb1ca806..11d23b81 100644
--- a/src/util/taproot.rs
+++ b/src/util/taproot.rs
@@ -604,9 +604,8 @@ impl ScriptLeaf {
     /// Returns the depth of this script leaf in the tap tree.
     #[inline]
     pub fn depth(&self) -> u8 {
-        // The depth is guaranteed to be < 127 by the TaprootBuilder type.
-        // TODO: Following MSRV bump implement via `try_into().expect("")`.
-        self.merkle_branch.0.len() as u8
+        // Depth is guarded by TAPROOT_CONTROL_MAX_NODE_COUNT.
+        u8::try_from(self.merkle_branch.0.len()).expect("depth is guaranteed to fit in a u8")
     }
 
     /// Computes a leaf hash for this [`ScriptLeaf`].