diff --git a/library/x509.c b/library/x509.c
index f97fb44..4493b87 100644
--- a/library/x509.c
+++ b/library/x509.c
@@ -153,7 +153,7 @@
         case MBEDTLS_MD_SHA512:
             return "SHA512";
 #endif
-#if defined(MBEDTLS_MD_CAN_RIPEMD160)
+#if defined(PSA_WANT_ALG_RIPEMD160)
         case MBEDTLS_MD_RIPEMD160:
             return "RIPEMD160";
 #endif