diff --git a/Encryption.md b/Encryption.md
index 09bbb2a..9394029 100644
--- a/Encryption.md
+++ b/Encryption.md
@@ -45,7 +45,7 @@ rc4-md5
 
 salsa20 and chacha20
 ====================
-Salsa20 and chacha20 are fast stream ciphers. Optimized salsa20 implementation on x86_64 is even 2x faster than RC4 (but slower on ARM).
+Salsa20 and chacha20 are fast stream ciphers. Optimized salsa20 implementation on x86_64 is even 2x faster than RC4 (but slightly slower on ARM).
 
 Install [libsodium](https://github.com/jedisct1/libsodium) >= 1.0.0 if you want to use them.