diff --git a/libs/walproposer/src/api_bindings.rs b/libs/walproposer/src/api_bindings.rs
index b0ac2a879e..7f1bbc3b80 100644
--- a/libs/walproposer/src/api_bindings.rs
+++ b/libs/walproposer/src/api_bindings.rs
@@ -188,6 +188,7 @@ extern "C" fn recovery_download(
     }
 }
 
+#[allow(clippy::unnecessary_cast)]
 extern "C" fn wal_read(
     sk: *mut Safekeeper,
     buf: *mut ::std::os::raw::c_char,
@@ -421,6 +422,7 @@ impl std::fmt::Display for Level {
 }
 
 /// Take ownership of `Vec<u8>` from StringInfoData.
+#[allow(clippy::unnecessary_cast)]
 pub(crate) fn take_vec_u8(pg: &mut StringInfoData) -> Option<Vec<u8>> {
     if pg.data.is_null() {
         return None;
diff --git a/libs/walproposer/src/walproposer.rs b/libs/walproposer/src/walproposer.rs
index 4be15344c5..0661d3a969 100644
--- a/libs/walproposer/src/walproposer.rs
+++ b/libs/walproposer/src/walproposer.rs
@@ -186,7 +186,7 @@ impl Wrapper {
             .unwrap()
             .into_bytes_with_nul();
         assert!(safekeepers_list_vec.len() == safekeepers_list_vec.capacity());
-        let safekeepers_list = safekeepers_list_vec.as_mut_ptr() as *mut i8;
+        let safekeepers_list = safekeepers_list_vec.as_mut_ptr() as *mut std::ffi::c_char;
 
         let callback_data = Box::into_raw(Box::new(api)) as *mut ::std::os::raw::c_void;