diff --git a/src/db.cpp b/src/db.cpp
index 7152033c4..b3ce00a04 100644
--- a/src/db.cpp
+++ b/src/db.cpp
@@ -4,6 +4,7 @@
 
 #include "headers.h"
 #include "db.h"
+#include "net.h"
 
 using namespace std;
 using namespace boost;
diff --git a/src/headers.h b/src/headers.h
index ee10c53ec..67165c464 100644
--- a/src/headers.h
+++ b/src/headers.h
@@ -118,7 +118,6 @@
 #include "bignum.h"
 #include "base58.h"
 #include "script.h"
-#include "net.h"
 #include "main.h"
 #ifdef GUI
 #include "uibase.h"
diff --git a/src/init.cpp b/src/init.cpp
index b12c5eecf..149110f40 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -4,6 +4,7 @@
 #include "headers.h"
 #include "db.h"
 #include "rpc.h"
+#include "net.h"
 
 using namespace std;
 using namespace boost;
diff --git a/src/irc.cpp b/src/irc.cpp
index b24554637..5c9e0a960 100644
--- a/src/irc.cpp
+++ b/src/irc.cpp
@@ -4,6 +4,7 @@
 
 #include "headers.h"
 #include "irc.h"
+#include "net.h"
 
 using namespace std;
 using namespace boost;
diff --git a/src/main.cpp b/src/main.cpp
index dda366a1f..5c6cb678c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3,6 +3,7 @@
 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
 #include "headers.h"
 #include "db.h"
+#include "net.h"
 #include "cryptopp/sha.h"
 
 using namespace std;
diff --git a/src/main.h b/src/main.h
index 411777349..33c489273 100644
--- a/src/main.h
+++ b/src/main.h
@@ -24,6 +24,13 @@ class CBlockIndex;
 class CWalletTx;
 class CKeyItem;
 
+class CMessageHeader;
+class CAddress;
+class CInv;
+class CRequestTracker;
+class CNode;
+class CBlockIndex;
+
 static const unsigned int MAX_BLOCK_SIZE = 1000000;
 static const unsigned int MAX_BLOCK_SIZE_GEN = MAX_BLOCK_SIZE/2;
 static const int MAX_BLOCK_SIGOPS = MAX_BLOCK_SIZE/50;
diff --git a/src/net.cpp b/src/net.cpp
index 7a1c137c7..60a91dffd 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -5,6 +5,7 @@
 #include "headers.h"
 #include "irc.h"
 #include "db.h"
+#include "net.h"
 
 #ifdef USE_UPNP
 #include <miniupnpc/miniwget.h>
diff --git a/src/rpc.cpp b/src/rpc.cpp
index e826d0b44..9ab7710ad 100644
--- a/src/rpc.cpp
+++ b/src/rpc.cpp
@@ -5,6 +5,7 @@
 #include "headers.h"
 #include "cryptopp/sha.h"
 #include "db.h"
+#include "net.h"
 #undef printf
 #include <boost/asio.hpp>
 #include <boost/iostreams/concepts.hpp>