diff --git a/api/units/all-features.txt b/api/units/all-features.txt
index 00fdd5dd6..a788adba0 100644
--- a/api/units/all-features.txt
+++ b/api/units/all-features.txt
@@ -1195,7 +1195,6 @@ pub fn u64::from(value: bitcoin_units::weight::Weight) -> Self
 pub fn u64::mul(self, rhs: bitcoin_units::weight::Weight) -> Self::Output
 pub macro bitcoin_units::impl_parse_str!
 pub macro bitcoin_units::impl_parse_str_from_int_infallible!
-pub macro bitcoin_units::impl_tryfrom_str!
 pub mod bitcoin_units
 pub mod bitcoin_units::amount
 pub mod bitcoin_units::amount::serde
diff --git a/api/units/alloc-only.txt b/api/units/alloc-only.txt
index 679646265..61e5afbfd 100644
--- a/api/units/alloc-only.txt
+++ b/api/units/alloc-only.txt
@@ -1066,7 +1066,6 @@ pub fn u64::from(value: bitcoin_units::weight::Weight) -> Self
 pub fn u64::mul(self, rhs: bitcoin_units::weight::Weight) -> Self::Output
 pub macro bitcoin_units::impl_parse_str!
 pub macro bitcoin_units::impl_parse_str_from_int_infallible!
-pub macro bitcoin_units::impl_tryfrom_str!
 pub mod bitcoin_units
 pub mod bitcoin_units::amount
 pub mod bitcoin_units::block
diff --git a/api/units/no-features.txt b/api/units/no-features.txt
index db9ed7378..367d8501a 100644
--- a/api/units/no-features.txt
+++ b/api/units/no-features.txt
@@ -1020,7 +1020,6 @@ pub fn u64::from(value: bitcoin_units::weight::Weight) -> Self
 pub fn u64::mul(self, rhs: bitcoin_units::weight::Weight) -> Self::Output
 pub macro bitcoin_units::impl_parse_str!
 pub macro bitcoin_units::impl_parse_str_from_int_infallible!
-pub macro bitcoin_units::impl_tryfrom_str!
 pub mod bitcoin_units
 pub mod bitcoin_units::amount
 pub mod bitcoin_units::block
diff --git a/units/src/parse.rs b/units/src/parse.rs
index d1f402dec..35c880f37 100644
--- a/units/src/parse.rs
+++ b/units/src/parse.rs
@@ -151,6 +151,7 @@ macro_rules! impl_parse_str {
 
 /// Implements `TryFrom<$from> for $to`.
 #[macro_export]
+#[doc(hidden)]                  // Helper macro called by `impl_parse_str`.
 macro_rules! impl_tryfrom_str {
     ($($from:ty, $to:ty, $err:ty, $inner_fn:expr);*) => {
         $(