diff --git a/src/merkleblock.cpp b/src/merkleblock.cpp
index babaa8213..0e6215db5 100644
--- a/src/merkleblock.cpp
+++ b/src/merkleblock.cpp
@@ -8,7 +8,7 @@
 #include "hash.h"
 #include "consensus/consensus.h"
 #include "utilstrencodings.h"
-
+#include "komodo_defs.h"
 using namespace std;
 
 CMerkleBlock::CMerkleBlock(const CBlock& block, CBloomFilter& filter)