diff --git a/include/secp256k1.h b/include/secp256k1.h
index cfbdd528c2..94a9a7a3a9 100644
--- a/include/secp256k1.h
+++ b/include/secp256k1.h
@@ -75,7 +75,7 @@ typedef struct {
     unsigned char data[64];
 } secp256k1_pubkey;
 
-/** Opaque data structured that holds a parsed ECDSA signature.
+/** Opaque data structure that holds a parsed ECDSA signature.
  *
  *  The exact representation of data inside is implementation defined and not
  *  guaranteed to be portable between different platforms or versions. It is
diff --git a/include/secp256k1_recovery.h b/include/secp256k1_recovery.h
index 341b8bac63..78a3eee05c 100644
--- a/include/secp256k1_recovery.h
+++ b/include/secp256k1_recovery.h
@@ -7,7 +7,7 @@
 extern "C" {
 #endif
 
-/** Opaque data structured that holds a parsed ECDSA signature,
+/** Opaque data structure that holds a parsed ECDSA signature,
  *  supporting pubkey recovery.
  *
  *  The exact representation of data inside is implementation defined and not