diff --git a/bitcoin/src/internal_macros.rs b/bitcoin/src/internal_macros.rs
index 208dbb688..658b099df 100644
--- a/bitcoin/src/internal_macros.rs
+++ b/bitcoin/src/internal_macros.rs
@@ -33,9 +33,7 @@ macro_rules! impl_consensus_encoding {
             fn consensus_decode<R: $crate::io::BufRead + ?Sized>(
                 r: &mut R,
             ) -> core::result::Result<$thing, $crate::consensus::encode::Error> {
-                use internals::ToU64 as _;
-
-                let mut r = r.take($crate::consensus::encode::MAX_VEC_SIZE.to_u64());
+                let mut r = r.take(internals::ToU64::to_u64($crate::consensus::encode::MAX_VEC_SIZE));
                 Ok($thing {
                     $($field: $crate::consensus::Decodable::consensus_decode(&mut r)?),+
                 })
diff --git a/hashes/src/internal_macros.rs b/hashes/src/internal_macros.rs
index ecb55d579..65e5ddb17 100644
--- a/hashes/src/internal_macros.rs
+++ b/hashes/src/internal_macros.rs
@@ -7,10 +7,8 @@ macro_rules! arr_newtype_fmt_impl {
         impl<$($gen: $gent),*> $crate::_export::_core::fmt::LowerHex for $ty<$($gen),*> {
             #[inline]
             fn fmt(&self, f: &mut $crate::_export::_core::fmt::Formatter) -> $crate::_export::_core::fmt::Result {
-                #[allow(unused)]
-                use crate::Hash as _;
                 let case = $crate::hex::Case::Lower;
-                if <$ty<$($gen),*>>::DISPLAY_BACKWARD {
+                if <$ty<$($gen),*> as crate::Hash>::DISPLAY_BACKWARD {
                     $crate::hex::fmt_hex_exact!(f, $bytes, self.0.iter().rev(), case)
                 } else {
                     $crate::hex::fmt_hex_exact!(f, $bytes, self.0.iter(), case)
@@ -21,10 +19,8 @@ macro_rules! arr_newtype_fmt_impl {
         impl<$($gen: $gent),*> $crate::_export::_core::fmt::UpperHex for $ty<$($gen),*> {
             #[inline]
             fn fmt(&self, f: &mut $crate::_export::_core::fmt::Formatter) -> $crate::_export::_core::fmt::Result {
-                #[allow(unused)]
-                use crate::Hash as _;
                 let case = $crate::hex::Case::Upper;
-                if <$ty<$($gen),*>>::DISPLAY_BACKWARD {
+                if <$ty<$($gen),*> as crate::Hash>::DISPLAY_BACKWARD {
                     $crate::hex::fmt_hex_exact!(f, $bytes, self.0.iter().rev(), case)
                 } else {
                     $crate::hex::fmt_hex_exact!(f, $bytes, self.0.iter(), case)
diff --git a/hashes/src/serde_macros.rs b/hashes/src/serde_macros.rs
index 2782e961c..81d97eae4 100644
--- a/hashes/src/serde_macros.rs
+++ b/hashes/src/serde_macros.rs
@@ -112,9 +112,7 @@ macro_rules! serde_impl(
         impl<$($gen: $gent),*> $crate::serde_macros::serde_details::SerdeHash for $t<$($gen),*> {
             const N : usize = $len;
             fn from_slice_delegated(sl: &[u8]) -> core::result::Result<Self, $crate::FromSliceError> {
-                #[allow(unused_imports)]
-                use $crate::Hash as _;
-                $t::from_slice(sl)
+                <$t<$($gen),*> as $crate::Hash>::from_slice(sl)
             }
         }