diff --git a/src/node_constants.cc b/src/node_constants.cc
index 3269e3003acd4d..34496673a97072 100644
--- a/src/node_constants.cc
+++ b/src/node_constants.cc
@@ -1032,10 +1032,8 @@ void DefineCryptoConstants(Local<Object> target) {
     NODE_DEFINE_CONSTANT(target, DH_NOT_SUITABLE_GENERATOR);
 #endif
 
-#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
 #define ALPN_ENABLED 1
     NODE_DEFINE_CONSTANT(target, ALPN_ENABLED);
-#endif
 
 #ifdef RSA_PKCS1_PADDING
     NODE_DEFINE_CONSTANT(target, RSA_PKCS1_PADDING);