diff --git a/bitcoin/src/blockdata/transaction.rs b/bitcoin/src/blockdata/transaction.rs
index eefa9c0587..8bc36accb0 100644
--- a/bitcoin/src/blockdata/transaction.rs
+++ b/bitcoin/src/blockdata/transaction.rs
@@ -86,7 +86,7 @@ crate::internal_macros::define_extension_trait! {
 /// Base weight excludes the witness and script.
 // We need to use this const here but do not want to make it public in `primitives::TxIn`.
 const TX_IN_BASE_WEIGHT: Weight =
-    Weight::from_vb_unwrap(OutPoint::SIZE as u64 + Sequence::SIZE as u64);
+    Weight::from_vb_unchecked(OutPoint::SIZE as u64 + Sequence::SIZE as u64);
 
 crate::internal_macros::define_extension_trait! {
     /// Extension functionality for the [`TxIn`] type.
diff --git a/units/src/weight.rs b/units/src/weight.rs
index 7e1e0b7af5..7114e13c3f 100644
--- a/units/src/weight.rs
+++ b/units/src/weight.rs
@@ -68,6 +68,7 @@ impl Weight {
     /// # Panics
     ///
     /// If the conversion from virtual bytes overflows.
+    #[deprecated(since = "TBD", note = "use `from_vb_unchecked` instead")]
     pub const fn from_vb_unwrap(vb: u64) -> Weight {
         match vb.checked_mul(Self::WITNESS_SCALE_FACTOR) {
             Some(weight) => Weight(weight),
@@ -272,12 +273,6 @@ mod tests {
         assert_eq!(None, w);
     }
 
-    #[test]
-    fn from_vb_const() {
-        const WU: Weight = Weight::from_vb_unwrap(1);
-        assert_eq!(Weight(4), WU);
-    }
-
     #[test]
     fn from_vb_unchecked() {
         let w = Weight::from_vb_unchecked(1);