diff --git a/include/psa/crypto_compat.h b/include/psa/crypto_compat.h
index 2f920b2..72c76c1 100644
--- a/include/psa/crypto_compat.h
+++ b/include/psa/crypto_compat.h
@@ -285,10 +285,11 @@
  *                            the ciphertext, return 0.
  *                            If the AEAD algorithm is not recognized, return 0.
  */
-#define PSA_AEAD_TAG_LENGTH_1_ARG(alg)                                        \
-    (PSA_ALG_IS_AEAD(alg) ?                                                   \
-     (((alg) & PSA_ALG_AEAD_TAG_LENGTH_MASK) >> PSA_AEAD_TAG_LENGTH_OFFSET) : \
-     0)
+#define PSA_AEAD_TAG_LENGTH_1_ARG(alg)                                           \
+    MBEDTLS_DEPRECATED_CONSTANT(size_t,                                          \
+        PSA_ALG_IS_AEAD(alg) ?                                                   \
+        (((alg) & PSA_ALG_AEAD_TAG_LENGTH_MASK) >> PSA_AEAD_TAG_LENGTH_OFFSET) : \
+        0)
 
 /** The maximum size of the output of psa_aead_encrypt(), in bytes.
  *
@@ -311,9 +312,10 @@
  *                            If the AEAD algorithm is not recognized, return 0.
  */
 #define PSA_AEAD_ENCRYPT_OUTPUT_SIZE_2_ARG(alg, plaintext_length) \
-    (PSA_AEAD_TAG_LENGTH_1_ARG(alg) != 0 ?                        \
-     (plaintext_length) + PSA_AEAD_TAG_LENGTH_1_ARG(alg) :        \
-     0)
+    MBEDTLS_DEPRECATED_CONSTANT(size_t,                           \
+        PSA_AEAD_TAG_LENGTH_1_ARG(alg) != 0 ?                     \
+        (plaintext_length) + PSA_AEAD_TAG_LENGTH_1_ARG(alg) :     \
+        0)
 
 /** The maximum size of the output of psa_aead_decrypt(), in bytes.
  *
@@ -336,9 +338,10 @@
  *                            If the AEAD algorithm is not recognized, return 0.
  */
 #define PSA_AEAD_DECRYPT_OUTPUT_SIZE_2_ARG(alg, ciphertext_length) \
-    (PSA_AEAD_TAG_LENGTH_1_ARG(alg) != 0 ?                         \
-     (ciphertext_length) - PSA_AEAD_TAG_LENGTH_1_ARG(alg) :        \
-     0)
+    MBEDTLS_DEPRECATED_CONSTANT(size_t,                            \
+        PSA_AEAD_TAG_LENGTH_1_ARG(alg) != 0 ?                      \
+        (ciphertext_length) - PSA_AEAD_TAG_LENGTH_1_ARG(alg) :     \
+        0)
 
 /** A sufficient output buffer size for psa_aead_update().
  *
@@ -365,9 +368,10 @@
  * capable of this. So for modes based on a block cipher, allow the
  * implementation to delay the output until it has a full block. */
 #define PSA_AEAD_UPDATE_OUTPUT_SIZE_2_ARG(alg, input_length)                        \
-    (PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ?                                         \
-     PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE, (input_length)) :    \
-     (input_length))
+    MBEDTLS_DEPRECATED_CONSTANT(size_t,                                             \
+        PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ?                                      \
+        PSA_ROUND_UP_TO_MULTIPLE(PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE, (input_length)) : \
+        (input_length))
 
 /** A sufficient ciphertext buffer size for psa_aead_finish().
  *
@@ -385,9 +389,10 @@
  *                            If the AEAD algorithm is not recognized, return 0.
  */
 #define PSA_AEAD_FINISH_OUTPUT_SIZE_1_ARG(alg)                          \
-    (PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ?                             \
-     PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE :                                  \
-     0)
+    MBEDTLS_DEPRECATED_CONSTANT(size_t,                                 \
+        PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ?                          \
+        PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE :                               \
+        0)
 
 /** A sufficient plaintext buffer size for psa_aead_verify().
  *
@@ -405,9 +410,10 @@
  *                            If the AEAD algorithm is not recognized, return 0.
  */
 #define PSA_AEAD_VERIFY_OUTPUT_SIZE_1_ARG(alg)                          \
-    (PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ?                             \
-     PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE :                                  \
-     0)
+    MBEDTLS_DEPRECATED_CONSTANT(size_t,                                 \
+        PSA_ALG_IS_AEAD_ON_BLOCK_CIPHER(alg) ?                          \
+        PSA_BLOCK_CIPHER_BLOCK_MAX_SIZE :                               \
+        0)
 
 #endif /* MBEDTLS_DEPRECATED_REMOVED */