diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index da1ae426d..39ed5e86b 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -3605,10 +3605,10 @@
  * If defined,
  * - MBEDTLS_SSL_CONF_SET_TIMER must evaluate to the name of an externally
  *   defined function with signature
- *      void (*f_set_timer)( void* , uint32_t, uint32_t ),
+ *      void f_set_timer( void* , uint32_t, uint32_t ),
  * * MBEDTLS_SSL_CONF_SEND must evaluate to the name of an externally
  *   defined function with signature
- *      int (*f_get_timer)( void* ).
+ *      int f_get_timer( void* ).
  */
 //#define MBEDTLS_SSL_CONF_GET_TIMER mbedtls_timing_get_delay
 //#define MBEDTLS_SSL_CONF_SET_TIMER mbedtls_timing_set_delay
@@ -3617,13 +3617,13 @@
  * If defined,
  * - MBEDTLS_SSL_CONF_RECV must evaluate to the name of an externally
  *   defined function with signature
- *      int (*f_recv)( void*, unsigned char *, size_t ),
+ *      int f_recv( void*, unsigned char *, size_t ),
  * * MBEDTLS_SSL_CONF_SEND must evaluate to the name of an externally
  *   defined function with signature
- *      int (*f_send)( void*, const unsigned char *, size_t ),
+ *      int f_send( void*, const unsigned char *, size_t ),
  * * MBEDTLS_SSL_CONF_RECV_TIMEOUT must evaluate to the name of an
  * externally defined function with signature
- *      int (*f_recv_timeout)( void*, const unsigned char *, size_t, uint32_t ).
+ *      int f_recv_timeout( void*, const unsigned char *, size_t, uint32_t ).
  */
 //#define MBEDTLS_SSL_CONF_RECV mbedtls_net_recv
 //#define MBEDTLS_SSL_CONF_SEND mbedtls_net_send
@@ -3631,7 +3631,7 @@
 
 /* The PRNG to use by the SSL module. If defined, this must
  * evaluate to the name on externally defined function with signature
- * int (*f_rng)(void *, unsigned char *, size_t),
+ * int f_rng(void *, unsigned char *, size_t),
  * e.g. mbedtls_ctr_drbg_random or mbedtls_hmac_drbg_random.
  */
 //#define MBEDTLS_SSL_CONF_RNG mbedtls_ctr_drbg_random