diff --git a/Cargo.toml b/Cargo.toml
index d5dcf57..e9e795f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ repository = "https://code.ciph.re/isis/curve25519-dalek"
 homepage = "https://code.ciph.re/isis/curve25519-dalek"
 documentation = "https://docs.rs/curve25519-dalek"
 keywords = ["cryptography", "curve25519", "elliptic", "curve", "ECC"]
-description = "A low-level cryptographic library for point, group, field, and scalar operations on a curve isomorphic to the twisted Edwards curve defined by x²+y² = 121665/121666 x²y² over GF(2²⁵⁵ - 19)."
+description = "A low-level cryptographic library for point, group, field, and scalar operations on a curve isomorphic to the twisted Edwards curve defined by -x²+y² = 121665/121666 x²y² over GF(2²⁵⁵ - 19)."
 exclude = [
     ".gitignore"
 ]
diff --git a/README.md b/README.md
index 2331ef1..b47433d 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 # curve25519-dalek ![](https://img.shields.io/crates/v/curve25519-dalek.svg) ![](https://docs.rs/curve25519-dalek/badge.svg)
 
 **A low-level cryptographic library for point, group, field, and scalar
-operations on a curve isomorphic to the twisted Edwards curve defined by x²+y²
+operations on a curve isomorphic to the twisted Edwards curve defined by -x²+y²
 = 121665/121666 x²y² over GF(2²⁵⁵ - 19).**
 
 **SPOILER ALERT:** *The Twelfth Doctor's first encounter with the Daleks is in