diff --git a/include/crypto/cipher.h b/include/crypto/cipher.h
index a812803..f90ac79 100644
--- a/include/crypto/cipher.h
+++ b/include/crypto/cipher.h
@@ -138,7 +138,7 @@ size_t qcrypto_cipher_get_iv_len(QCryptoCipherAlgorithm alg,
  * @mode: the cipher usage mode
  * @key: the private key bytes
  * @nkey: the length of @key
- * @errp: pointer to an uninitialized error object
+ * @errp: pointer to a NULL-initialized error object
  *
  * Creates a new cipher object for encrypting/decrypting
  * data with the algorithm @alg in the usage mode @mode.
@@ -174,7 +174,7 @@ void qcrypto_cipher_free(QCryptoCipher *cipher);
  * @in: buffer holding the plain text input data
  * @out: buffer to fill with the cipher text output data
  * @len: the length of @in and @out buffers
- * @errp: pointer to an uninitialized error object
+ * @errp: pointer to a NULL-initialized error object
  *
  * Encrypts the plain text stored in @in, filling
  * @out with the resulting ciphered text. Both the
@@ -196,7 +196,7 @@ int qcrypto_cipher_encrypt(QCryptoCipher *cipher,
  * @in: buffer holding the cipher text input data
  * @out: buffer to fill with the plain text output data
  * @len: the length of @in and @out buffers
- * @errp: pointer to an uninitialized error object
+ * @errp: pointer to a NULL-initialized error object
  *
  * Decrypts the cipher text stored in @in, filling
  * @out with the resulting plain text. Both the
@@ -216,7 +216,7 @@ int qcrypto_cipher_decrypt(QCryptoCipher *cipher,
  * @cipher: the cipher object
  * @iv: the initialization vector bytes
  * @niv: the length of @iv
- * @errpr: pointer to an uninitialized error object
+ * @errpr: pointer to a NULL-initialized error object
  *
  * If the @cipher object is setup to use a mode that requires
  * initialization vectors, this sets the initialization vector
diff --git a/include/crypto/hash.h b/include/crypto/hash.h
index 41822c0..5e8d9a1 100644
--- a/include/crypto/hash.h
+++ b/include/crypto/hash.h
@@ -55,7 +55,7 @@ size_t qcrypto_hash_digest_len(QCryptoHashAlgorithm alg);
  * @niov: the length of @iov
  * @result: pointer to hold output hash
  * @resultlen: pointer to hold length of @result
- * @errp: pointer to uninitialized error object
+ * @errp: pointer to a NULL-initialized error object
  *
  * Computes the hash across all the memory regions
  * present in @iov. The @result pointer will be
@@ -80,7 +80,7 @@ int qcrypto_hash_bytesv(QCryptoHashAlgorithm alg,
  * @len: the length of @buf
  * @result: pointer to hold output hash
  * @resultlen: pointer to hold length of @result
- * @errp: pointer to uninitialized error object
+ * @errp: pointer to a NULL-initialized error object
  *
  * Computes the hash across all the memory region
  * @buf of length @len. The @result pointer will be
@@ -104,7 +104,7 @@ int qcrypto_hash_bytes(QCryptoHashAlgorithm alg,
  * @iov: the array of memory regions to hash
  * @niov: the length of @iov
  * @digest: pointer to hold output hash
- * @errp: pointer to uninitialized error object
+ * @errp: pointer to a NULL-initialized error object
  *
  * Computes the hash across all the memory regions
  * present in @iov. The @digest pointer will be
@@ -127,7 +127,7 @@ int qcrypto_hash_digestv(QCryptoHashAlgorithm alg,
  * @buf: the memory region to hash
  * @len: the length of @buf
  * @digest: pointer to hold output hash
- * @errp: pointer to uninitialized error object
+ * @errp: pointer to a NULL-initialized error object
  *
  * Computes the hash across all the memory region
  * @buf of length @len. The @digest pointer will be
@@ -150,7 +150,7 @@ int qcrypto_hash_digest(QCryptoHashAlgorithm alg,
  * @iov: the array of memory regions to hash
  * @niov: the length of @iov
  * @base64: pointer to hold output hash
- * @errp: pointer to uninitialized error object
+ * @errp: pointer to a NULL-initialized error object
  *
  * Computes the hash across all the memory regions
  * present in @iov. The @base64 pointer will be
@@ -173,7 +173,7 @@ int qcrypto_hash_base64v(QCryptoHashAlgorithm alg,
  * @buf: the memory region to hash
  * @len: the length of @buf
  * @base64: pointer to hold output hash
- * @errp: pointer to uninitialized error object
+ * @errp: pointer to a NULL-initialized error object
  *
  * Computes the hash across all the memory region
  * @buf of length @len. The @base64 pointer will be
diff --git a/include/crypto/tlssession.h b/include/crypto/tlssession.h
index d356a8d..c1bad9e 100644
--- a/include/crypto/tlssession.h
+++ b/include/crypto/tlssession.h
@@ -114,7 +114,7 @@ typedef struct QCryptoTLSSession QCryptoTLSSession;
  * @hostname: optional hostname to validate
  * @aclname: optional ACL to validate peer credentials against
  * @endpoint: role of the TLS session, client or server
- * @errp: pointer to an uninitialized error object
+ * @errp: pointer to a NULL-initialized error object
  *
  * Create a new TLS session object that will be used to
  * negotiate a TLS session over an arbitrary data channel.
@@ -163,7 +163,7 @@ void qcrypto_tls_session_free(QCryptoTLSSession *sess);
 /**
  * qcrypto_tls_session_check_credentials:
  * @sess: the TLS session object
- * @errp: pointer to an uninitialized error object
+ * @errp: pointer to a NULL-initialized error object
  *
  * Validate the peer's credentials after a successful
  * TLS handshake. It is an error to call this before
@@ -249,7 +249,7 @@ ssize_t qcrypto_tls_session_read(QCryptoTLSSession *sess,
 /**
  * qcrypto_tls_session_handshake:
  * @sess: the TLS session object
- * @errp: pointer to an uninitialized error object
+ * @errp: pointer to a NULL-initialized error object
  *
  * Start, or continue, a TLS handshake sequence. If
  * the underlying data channel is non-blocking, then
@@ -292,7 +292,7 @@ qcrypto_tls_session_get_handshake_status(QCryptoTLSSession *sess);
 /**
  * qcrypto_tls_session_get_key_size:
  * @sess: the TLS session object
- * @errp: pointer to an uninitialized error object
+ * @errp: pointer to a NULL-initialized error object
  *
  * Check the size of the data channel encryption key
  *
