diff --git a/parachain/test-parachains/halt/src/lib.rs b/parachain/test-parachains/halt/src/lib.rs
index 3c1416f3c6e9..0c56cfe6393e 100644
--- a/parachain/test-parachains/halt/src/lib.rs
+++ b/parachain/test-parachains/halt/src/lib.rs
@@ -39,18 +39,20 @@ pub fn wasm_binary_unwrap() -> &'static [u8] {
 #[panic_handler]
 #[no_mangle]
 pub fn panic(_info: &core::panic::PanicInfo) -> ! {
-	core::intrinsics::abort()
+	unsafe { core::intrinsics::abort() }
 }
 
 #[cfg(not(feature = "std"))]
 #[alloc_error_handler]
 #[no_mangle]
 pub fn oom(_: core::alloc::Layout) -> ! {
-	core::intrinsics::abort();
+	unsafe {
+		core::intrinsics::abort();
+	}
 }
 
 #[cfg(not(feature = "std"))]
 #[no_mangle]
-pub extern "C" fn validate_block(_params: *const u8, _len: usize) -> u64 {
+pub extern "C" fn validate_block(params: *const u8, len: usize) -> u64 {
 	loop {}
 }