diff --git a/include/mbedtls/asn1.h b/include/mbedtls/asn1.h
index 3c3bfad..ff019f4 100644
--- a/include/mbedtls/asn1.h
+++ b/include/mbedtls/asn1.h
@@ -197,7 +197,8 @@
 }
 mbedtls_asn1_named_data;
 
-#if defined(MBEDTLS_ASN1_PARSE_C) || defined(MBEDTLS_X509_CREATE_C)
+#if defined(MBEDTLS_ASN1_PARSE_C) || defined(MBEDTLS_X509_CREATE_C) || \
+    defined(MBEDTLS_PSA_UTIL_HAVE_ECDSA)
 /**
  * \brief       Get the length of an ASN.1 element.
  *              Updates the pointer to immediately behind the length.
@@ -244,7 +245,7 @@
 int mbedtls_asn1_get_tag(unsigned char **p,
                          const unsigned char *end,
                          size_t *len, int tag);
-#endif /* MBEDTLS_ASN1_PARSE_C || MBEDTLS_X509_CREATE_C */
+#endif /* MBEDTLS_ASN1_PARSE_C || MBEDTLS_X509_CREATE_C || MBEDTLS_PSA_UTIL_HAVE_ECDSA */
 
 #if defined(MBEDTLS_ASN1_PARSE_C)
 /**
diff --git a/include/mbedtls/asn1write.h b/include/mbedtls/asn1write.h
index 7af4aba..0c5a85a 100644
--- a/include/mbedtls/asn1write.h
+++ b/include/mbedtls/asn1write.h
@@ -36,7 +36,8 @@
 extern "C" {
 #endif
 
-#if defined(MBEDTLS_ASN1_WRITE_C) || defined(MBEDTLS_X509_USE_C)
+#if defined(MBEDTLS_ASN1_WRITE_C) || defined(MBEDTLS_X509_USE_C) || \
+    defined(MBEDTLS_PSA_UTIL_HAVE_ECDSA)
 /**
  * \brief           Write a length field in ASN.1 format.
  *
@@ -65,7 +66,7 @@
  */
 int mbedtls_asn1_write_tag(unsigned char **p, const unsigned char *start,
                            unsigned char tag);
-#endif /* MBEDTLS_ASN1_WRITE_C || MBEDTLS_X509_USE_C */
+#endif /* MBEDTLS_ASN1_WRITE_C || MBEDTLS_X509_USE_C || MBEDTLS_PSA_UTIL_HAVE_ECDSA*/
 
 #if defined(MBEDTLS_ASN1_WRITE_C)
 /**
diff --git a/include/mbedtls/psa_util.h b/include/mbedtls/psa_util.h
index 3bf05d1..15e92e3 100644
--- a/include/mbedtls/psa_util.h
+++ b/include/mbedtls/psa_util.h
@@ -184,7 +184,6 @@
 
 #if defined(MBEDTLS_PSA_UTIL_HAVE_ECDSA)
 
-#if defined(MBEDTLS_ASN1_WRITE_C)
 /** Convert an ECDSA signature from raw format (used by PSA APIs) to DER ASN.1
  * format (used by legacy crypto APIs).
  *
@@ -201,9 +200,7 @@
 int mbedtls_ecdsa_raw_to_der(const unsigned char *raw, size_t raw_len,
                              unsigned char *der, size_t der_size, size_t *der_len,
                              size_t bits);
-#endif /* MBEDTLS_ASN1_WRITE_C */
 
-#if defined(MBEDTLS_ASN1_PARSE_C)
 /** Convert an ECDSA signature from DER ASN.1 format (used by legacy crypto
  * APIs) to raw format (used by PSA APIs).
  *
@@ -220,7 +217,6 @@
 int mbedtls_ecdsa_der_to_raw(const unsigned char *der, size_t der_len,
                              unsigned char *raw, size_t raw_size, size_t *raw_len,
                              size_t bits);
-#endif /* MBEDTLS_ASN1_PARSE_C */
 
 #endif /* MBEDTLS_PSA_UTIL_HAVE_ECDSA */