diff --git a/neps/nep-0488.md b/neps/nep-0488.md
index 3e6904a99..335314317 100644
--- a/neps/nep-0488.md
+++ b/neps/nep-0488.md
@@ -997,8 +997,7 @@ The ERROR_CODE is returned.
 ```rust
 pub fn bls12381_pairing_check(&mut self, 
                               value_len: u64, 
-                              value_ptr: u64, 
-                              register_id: u64) -> Result<u64>;
+                              value_ptr: u64) -> Result<u64>;
 ```
 
 #### bls12381_p1_decompress