diff --git a/src/libstrongswan/crypto/diffie_hellman.c b/src/libstrongswan/crypto/diffie_hellman.c
index 173882bce..c6c3bc65f 100644
--- a/src/libstrongswan/crypto/diffie_hellman.c
+++ b/src/libstrongswan/crypto/diffie_hellman.c
@@ -532,6 +532,8 @@ bool diffie_hellman_group_is_ec(diffie_hellman_group_t group)
 		case ECP_256_BP:
 		case ECP_384_BP:
 		case ECP_512_BP:
+		case CURVE_25519:
+		case CURVE_448:
 			return TRUE;
 		default:
 			return FALSE;