diff --git a/src/crosschain.cpp b/src/crosschain.cpp
index 9d564b6b3..4c0280646 100644
--- a/src/crosschain.cpp
+++ b/src/crosschain.cpp
@@ -25,6 +25,7 @@
 
 
 int NOTARISATION_SCAN_LIMIT_BLOCKS = 1440;
+CBlockIndex *komodo_getblockindex(uint256 hash);
 
 
 /* On KMD */