diff --git a/src/komodo_nSPV_fullnode.h b/src/komodo_nSPV_fullnode.h
index 7c5f421c2..054077765 100644
--- a/src/komodo_nSPV_fullnode.h
+++ b/src/komodo_nSPV_fullnode.h
@@ -280,7 +280,8 @@ int32_t NSPV_mempoolfuncs(int32_t *vindexp,std::vector<uint256> &txids,char *coi
                 CScript scriptPubKey = tx.vout[tx.vout.size()-1].scriptPubKey;
                 if ( GetOpReturnData(scriptPubKey,vopret) != 0 )
                 {
-                    if ( vopret[0] == e && vopret[1] == f )
+                    uint8_t *ptr = vopret.data();
+                    if ( ptr[0] == e && ptr[1] == f )
                     {
                         txids.push_back(hash);
                         num++;