diff --git a/crypto/x509/x509type.c b/crypto/x509/x509type.c
index 11e7b51693..f78c2a6b43 100644
--- a/crypto/x509/x509type.c
+++ b/crypto/x509/x509type.c
@@ -106,7 +106,8 @@ int X509_certificate_type(X509 *x, EVP_PKEY *pkey)
 		break;
 		}
 
-	if (EVP_PKEY_size(pk) <= 512)
+	if (EVP_PKEY_size(pk) <= 512/8)	/* /8 because it's 512 bits we look
+					   for, not bytes */
 		ret|=EVP_PKT_EXP;
 	if(pkey==NULL) EVP_PKEY_free(pk);
 	return(ret);