1 files changed, 7 insertions, 0 deletions
diff --git a/src/main.h b/src/main.h
index 411777349a..33c4892732 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;