diff --git a/draft-ietf-sframe-enc.html b/draft-ietf-sframe-enc.html
index 2361508..e73fa50 100644
--- a/draft-ietf-sframe-enc.html
+++ b/draft-ietf-sframe-enc.html
@@ -2851,7 +2851,7 @@ <h3 id="name-risks-due-to-short-tags">
 <p id="section-7.5-2">Assuming that the authentication properties of the ciphersuite are robust, the
 only attack that an attacker can mount is an attempt to find an acceptable
 (ciphertext, tag) combination through brute force.  Such a brute-force attack
-will have an expected sucess rate of the following form:<a href="#section-7.5-2" class="pilcrow">¶</a></p>
+will have an expected success rate of the following form:<a href="#section-7.5-2" class="pilcrow">¶</a></p>
 <p id="section-7.5-3"><code>
 attacker_success_rate = attempts_per_second / 2^(8*Nt)
 </code><a href="#section-7.5-3" class="pilcrow">¶</a></p>
diff --git a/draft-ietf-sframe-enc.txt b/draft-ietf-sframe-enc.txt
index b2c8bd6..4128df3 100644
--- a/draft-ietf-sframe-enc.txt
+++ b/draft-ietf-sframe-enc.txt
@@ -1061,7 +1061,7 @@ Alice |          (per-frame)         (per-packet)   |        |       |
    Assuming that the authentication properties of the ciphersuite are
    robust, the only attack that an attacker can mount is an attempt to
    find an acceptable (ciphertext, tag) combination through brute force.
-   Such a brute-force attack will have an expected sucess rate of the
+   Such a brute-force attack will have an expected success rate of the
    following form:
 
    attacker_success_rate = attempts_per_second / 2^(8*Nt)