diff --git a/RIPS/rip-7212.md b/RIPS/rip-7212.md
index f98250a..80534e6 100644
--- a/RIPS/rip-7212.md
+++ b/RIPS/rip-7212.md
@@ -73,13 +73,14 @@ The signature verifying algorithm takes the signed message hash, the signature c
 s1 = s^(−1) (mod n)
 
 # Recover the random point used during the signing:
+# If R' is the point at infinity, verification fails
 R' = (h * s1) * G + (r * s1) * pubKey
 
 # Take from R' its x-coordinate:
 r' = R'.x
 
 # Calculate the signature validation result by comparing whether:
-r' == r
+r' == r (mod n)
 
 ```