diff --git a/src/node_crypto_common.h b/src/node_crypto_common.h
index e42e249ef2ba2e..f1299d84b632c0 100644
--- a/src/node_crypto_common.h
+++ b/src/node_crypto_common.h
@@ -3,7 +3,6 @@
 
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
-#include "env.h"
 #include "node_crypto.h"
 #include "v8.h"
 #include <openssl/ssl.h>
@@ -13,6 +12,9 @@
 #include <unordered_map>
 
 namespace node {
+
+class Environment;
+
 namespace crypto {
 
 // OPENSSL_free is a macro, so we need a wrapper function.
diff --git a/src/node_http_common-inl.h b/src/node_http_common-inl.h
index d63cdf79a4b468..2dcb643cce439c 100644
--- a/src/node_http_common-inl.h
+++ b/src/node_http_common-inl.h
@@ -4,7 +4,6 @@
 #include "node_http_common.h"
 #include "node.h"
 #include "node_mem-inl.h"
-#include "env-inl.h"
 #include "v8.h"
 
 #include <algorithm>
diff --git a/src/node_sockaddr.h b/src/node_sockaddr.h
index 2e3ae09ce3bb8d..c0d006a4d6e681 100644
--- a/src/node_sockaddr.h
+++ b/src/node_sockaddr.h
@@ -3,7 +3,6 @@
 
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
-#include "env.h"
 #include "memory_tracker.h"
 #include "node.h"
 #include "uv.h"
@@ -14,6 +13,8 @@
 
 namespace node {
 
+class Environment;
+
 class SocketAddress : public MemoryRetainer {
  public:
   struct Hash {
diff --git a/src/stream_base-inl.h b/src/stream_base-inl.h
index 27a9a01c7c2170..d217ababbceab3 100644
--- a/src/stream_base-inl.h
+++ b/src/stream_base-inl.h
@@ -6,7 +6,6 @@
 #include "stream_base.h"
 
 #include "node.h"
-#include "env-inl.h"
 #include "v8.h"
 
 namespace node {