diff --git a/include/polarssl/ssl.h b/include/polarssl/ssl.h
index 194e944..219060d 100644
--- a/include/polarssl/ssl.h
+++ b/include/polarssl/ssl.h
@@ -1024,6 +1024,7 @@
         int (*f_recv)(void *, unsigned char *, size_t), void *p_recv,
         int (*f_send)(void *, const unsigned char *, size_t), void *p_send );
 
+#if defined(POLARSSL_SSL_SRV_C)
 /**
  * \brief          Set the session cache callbacks (server-side only)
  *                 If not set, no session resuming is done.
@@ -1064,7 +1065,9 @@
 void ssl_set_session_cache( ssl_context *ssl,
         int (*f_get_cache)(void *, ssl_session *), void *p_get_cache,
         int (*f_set_cache)(void *, const ssl_session *), void *p_set_cache );
+#endif /* POLARSSL_SSL_SRV_C */
 
+#if defined(POLARSSL_SSL_CLI_C)
 /**
  * \brief          Request resumption of session (client-side only)
  *                 Session data is copied from presented session structure.
@@ -1080,6 +1083,7 @@
  * \sa             ssl_get_session()
  */
 int ssl_set_session( ssl_context *ssl, const ssl_session *session );
+#endif /* POLARSSL_SSL_CLI_C */
 
 /**
  * \brief               Set the list of allowed ciphersuites and the preference
@@ -1578,6 +1582,7 @@
 const x509_crt *ssl_get_peer_cert( const ssl_context *ssl );
 #endif /* POLARSSL_X509_CRT_PARSE_C */
 
+#if defined(POLARSSL_SSL_CLI_C)
 /**
  * \brief          Save session in order to resume it later (client-side only)
  *                 Session data is copied to presented session structure.
@@ -1595,6 +1600,7 @@
  * \sa             ssl_set_session()
  */
 int ssl_get_session( const ssl_context *ssl, ssl_session *session );
+#endif /* POLARSSL_SSL_CLI_C */
 
 /**
  * \brief          Perform the SSL handshake