diff --git a/library/pkparse.c b/library/pkparse.c
index e3d84c2..7f2816b 100644
--- a/library/pkparse.c
+++ b/library/pkparse.c
@@ -654,7 +654,7 @@
 #else /* MBEDTLS_PK_USE_PSA_EC_DATA */
     mbedtls_ecp_keypair *eck = mbedtls_pk_ec_rw(*pk);
 
-    if ((ret = mbedtls_mpi_read_binary_le(&eck->d, key, len)) != 0) {
+    if ((ret = mbedtls_ecp_read_key(eck->grp.id, eck, key, len)) != 0) {
         return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PK_KEY_INVALID_FORMAT, ret);
     }
 #endif /* MBEDTLS_PK_USE_PSA_EC_DATA */