diff --git a/README b/README
index 46ed750..2eae0fe 100644
--- a/README
+++ b/README
@@ -79,7 +79,7 @@ SECURITY
 
 git-crypt is more secure that other transparent git encryption systems.
 git-crypt encrypts files using AES-256 in CTR mode with a synthetic IV
-derived from the SHA-1 HMAC of the file.  This is provably semantically
+derived from the SHA-1 HMAC of the file.  This mode of operation is provably semantically
 secure under deterministic chosen-plaintext attack.  That means that
 although the encryption is deterministic (which is required so git can
 distinguish when a file has and hasn't changed), it leaks no information
diff --git a/README.md b/README.md
index 785b494..058f6ea 100644
--- a/README.md
+++ b/README.md
@@ -81,7 +81,7 @@ Security
 
 git-crypt is more secure that other transparent git encryption systems.
 git-crypt encrypts files using AES-256 in CTR mode with a synthetic IV
-derived from the SHA-1 HMAC of the file.  This is provably semantically
+derived from the SHA-1 HMAC of the file.  This mode of operation is provably semantically
 secure under deterministic chosen-plaintext attack.  That means that
 although the encryption is deterministic (which is required so git can
 distinguish when a file has and hasn't changed), it leaks no information