diff --git a/src/secp256k1/include/secp256k1.h b/src/secp256k1/include/secp256k1.h
--- a/src/secp256k1/include/secp256k1.h
+++ b/src/secp256k1/include/secp256k1.h
@@ -11,7 +11,7 @@
  *
  * 1. Context pointers go first, followed by output arguments, combined
  *    output/input arguments, and finally input-only arguments.
- * 2. Array lengths always immediately the follow the argument whose length
+ * 2. Array lengths always immediately follow the argument whose length
  *    they describe, even if this violates rule 1.
  * 3. Within the OUT/OUTIN/IN groups, pointers to data that is typically generated
  *    later go first. This means: signatures, public nonces, secret nonces,