diff --git a/library/psa_crypto_aead.c b/library/psa_crypto_aead.c
index a201985b4f..307bfe7840 100644
--- a/library/psa_crypto_aead.c
+++ b/library/psa_crypto_aead.c
@@ -310,9 +310,6 @@ psa_status_t mbedtls_psa_aead_decrypt(
 exit:
     mbedtls_psa_aead_abort(&operation);
 
-    if (status == PSA_SUCCESS) {
-        *plaintext_length = ciphertext_length - operation.tag_length;
-    }
     return status;
 }