diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 7a6bb37..e571849 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -1212,14 +1212,11 @@
     defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY)
         case PSA_KEY_TYPE_RSA_KEY_PAIR:
         case PSA_KEY_TYPE_RSA_PUBLIC_KEY:
-#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
             /* TODO: reporting the public exponent for opaque keys
              * is not yet implemented.
              * https://github.com/ARMmbed/mbed-crypto/issues/216
              */
-            if( psa_key_slot_is_external( slot ) )
-                break;
-#endif /* MBEDTLS_PSA_CRYPTO_SE_C */
+            if( ! psa_key_lifetime_is_external( slot->attr.lifetime ) )
             {
                 mbedtls_rsa_context *rsa = NULL;