diff --git a/library/psa_crypto_aead.c b/library/psa_crypto_aead.c
index 48969b3..730ef95 100644
--- a/library/psa_crypto_aead.c
+++ b/library/psa_crypto_aead.c
@@ -24,6 +24,7 @@
 
 #include "psa_crypto_aead.h"
 #include "psa_crypto_core.h"
+#include "psa_crypto_cipher.h"
 
 #include <string.h>
 #include "mbedtls/platform.h"
diff --git a/library/psa_crypto_cipher.h b/library/psa_crypto_cipher.h
index fae9847..3bd5360 100644
--- a/library/psa_crypto_cipher.h
+++ b/library/psa_crypto_cipher.h
@@ -1,5 +1,5 @@
 /*
- *  PSA cipher driver entry points
+ *  PSA cipher driver entry points and associated auxiliary functions
  */
 /*
  *  Copyright The Mbed TLS Contributors
diff --git a/library/psa_crypto_core.h b/library/psa_crypto_core.h
index 8c91b04..9863848 100644
--- a/library/psa_crypto_core.h
+++ b/library/psa_crypto_core.h
@@ -246,22 +246,6 @@
  */
 psa_status_t mbedtls_to_psa_error( int ret );
 
-/** Get Mbed TLS cipher information given the cipher algorithm PSA identifier
- *  as well as the PSA type and size of the key to be used with the cipher
- *  algorithm.
- *
- * \param       alg        PSA cipher algorithm identifier
- * \param       key_type   PSA key type
- * \param       key_bits   Size of the key in bits
- * \param[out]  cipher_id  Mbed TLS cipher algorithm identifier
- *
- * \return  The Mbed TLS cipher information of the cipher algorithm.
- *          \c NULL if the PSA cipher algorithm is not supported.
- */
-const mbedtls_cipher_info_t *mbedtls_cipher_info_from_psa(
-    psa_algorithm_t alg, psa_key_type_t key_type, size_t key_bits,
-    mbedtls_cipher_id_t *cipher_id );
-
 /** Import a key in binary format.
  *
  * \note The signature of this function is that of a PSA driver
diff --git a/library/psa_crypto_mac.c b/library/psa_crypto_mac.c
index dcf065a..d771e23 100644
--- a/library/psa_crypto_mac.c
+++ b/library/psa_crypto_mac.c
@@ -24,6 +24,7 @@
 
 #include <psa/crypto.h>
 #include "psa_crypto_core.h"
+#include "psa_crypto_cipher.h"
 #include "psa_crypto_mac.h"
 #include <mbedtls/md.h>