diff --git a/src/komodo-tx.cpp b/src/komodo-tx.cpp
index 67ac68cd4..04baecd39 100644
--- a/src/komodo-tx.cpp
+++ b/src/komodo-tx.cpp
@@ -47,6 +47,7 @@ using namespace std;
 
 #include "komodo_interest.h"
 
+CKey NSPV_key;
 uint64_t komodo_accrued_interest(int32_t *txheightp,uint32_t *locktimep,uint256 hash,int32_t n,int32_t checkheight,uint64_t checkvalue,int32_t tipheight)
 {
     return(0);