diff --git a/Description.md b/Description.md
index ca65c11..4ac9da9 100644
--- a/Description.md
+++ b/Description.md
@@ -72,8 +72,6 @@ Q = (1/r) * (R*s - G*m) //recovered pubkey
 
 Ethereum's `ecrecover` returns the last 20 bytes of the keccak256 hash of the 64-byte public key, [check code here](https://github.com/ethereum/go-ethereum/blob/eb948962704397bb861fd4c0591b5056456edd4d/crypto/crypto.go#L275). Given signature (`R`, `s`), message `m` and public key `P` we can feed values into `ecrecover` such that the returned address can be used in a comparison to the challenge. 
 
-$$ calculate e = H(address(R) || m) and P_x = x-coordinate of P $$
-
 pass:
 
 ```bash
@@ -92,12 +90,12 @@ a = -G*(-s*P_x) = G*s*P_x
 b = P*(-m*P_x) = -P*e*P_x
 Q = (1/P_x) (a+b)
 Q = (1/P_x)(G*s*P_x - P*e*P_x)
-Q = G*s - P*e  // same as schnorr verify above
+Q = G*s - P*e  // same as verification above
 ```
 
 the returned value is `address(Q)`.
 
-* calculate e' = h(address(Q) || m)
+* calculate e'
 * check e' == e to verify the signature.
 
 Canoncial `ecrecover` implementations: