diff --git a/src/libcrypto-compat.h b/src/libcrypto-compat.h
index 437b0534..48e30bd1 100644
--- a/src/libcrypto-compat.h
+++ b/src/libcrypto-compat.h
@@ -2,6 +2,11 @@
 #define LIBCRYPTO_COMPAT_H
 
 #include <openssl/opensslv.h>
+
+#define NISTP256 "P-256"
+#define NISTP384 "P-384"
+#define NISTP521 "P-521"
+
 #if OPENSSL_VERSION_NUMBER < 0x10100000L
 
 #include <openssl/rsa.h>