diff --git a/src/libgcrypt.c b/src/libgcrypt.c
index 5b31ff3..b16bb6c 100644
--- a/src/libgcrypt.c
+++ b/src/libgcrypt.c
@@ -57,6 +57,10 @@ int _libssh2_rsa_new(libssh2_rsa_ctx **rsa,
 		     unsigned long coefflen)
 {
 	int rc;
+	(void)e1data;
+	(void)e1len;
+	(void)e2data;
+	(void)e2len;
 
 	if (ddata) {
 		rc = gcry_sexp_build
@@ -79,11 +83,11 @@ int _libssh2_rsa_new(libssh2_rsa_ctx **rsa,
 
 int _libssh2_rsa_sha1_verify(libssh2_rsa_ctx *rsa,
 			     const unsigned char *sig,
+			     unsigned long sig_len,
 			     const unsigned char *m,
 			     unsigned long m_len)
 {
 	unsigned char hash[SHA_DIGEST_LENGTH];
-	int ret;
 	gcry_sexp_t s_sig, s_hash;
 	int rc = -1;
 
@@ -154,6 +158,8 @@ int _libssh2_rsa_new_private (libssh2_rsa_ctx **rsa,
 	char *n, *e, *d, *p, *q, *e1, *e2, *coeff;
 	unsigned int nlen, elen, dlen, plen, qlen, e1len, e2len, coefflen;
 
+	(void)passphrase;
+
 	ret = _libssh2_pem_parse (session,
 				  "-----BEGIN RSA PRIVATE KEY-----",
 				  "-----END RSA PRIVATE KEY-----",
@@ -248,6 +254,8 @@ int _libssh2_dsa_new_private (libssh2_dsa_ctx **dsa,
 	char *p, *q, *g, *y, *x;
 	unsigned int plen, qlen, glen, ylen, xlen;
 
+	(void)passphrase;
+
 	ret = _libssh2_pem_parse (session,
 				  "-----BEGIN DSA PRIVATE KEY-----",
 				  "-----END DSA PRIVATE KEY-----",
@@ -470,12 +478,10 @@ out:
 
 int _libssh2_dsa_sha1_verify(libssh2_dsa_ctx *dsactx,
 			     const unsigned char *sig,
-			     unsigned long sig_len,
 			     const unsigned char *m,
 			     unsigned long m_len)
 {
 	unsigned char hash[SHA_DIGEST_LENGTH+1];
-	int ret;
 	gcry_sexp_t s_sig, s_hash;
 	int rc = -1;
 
@@ -509,6 +515,8 @@ int _libssh2_cipher_init (_libssh2_cipher_ctx *h,
 	int mode = 0, ret;
 	int keylen = gcry_cipher_get_algo_keylen (algo);
 
+	(void)encrypt;
+
 	if (algo != GCRY_CIPHER_ARCFOUR) {
 		mode = GCRY_CIPHER_MODE_CBC;
 	}
diff --git a/src/libgcrypt.h b/src/libgcrypt.h
index f6ec8bf..4853f95 100644
--- a/src/libgcrypt.h
+++ b/src/libgcrypt.h
@@ -149,10 +149,10 @@ int _libssh2_dsa_sha1_verify(libssh2_dsa_ctx *dsa,
 			     const unsigned char *sig,
 			     const unsigned char *m,
 			     unsigned long m_len);
-int _libssh2_dsa_sign(libssh2_dsa_ctx *dsactx,
-		      const unsigned char *hash,
-		      unsigned long hash_len,
-		      unsigned char *sig);
+int _libssh2_dsa_sha1_sign(libssh2_dsa_ctx *dsactx,
+			   const unsigned char *hash,
+			   unsigned long hash_len,
+			   unsigned char *sig);
 
 #define _libssh2_dsa_free(dsactx)  gcry_sexp_release (dsactx)