diff --git a/src/cc/dilithium.c b/src/cc/dilithium.c
index d4b75bf38..7ab6b4c37 100644
--- a/src/cc/dilithium.c
+++ b/src/cc/dilithium.c
@@ -3352,7 +3352,7 @@ int64_t dilithium_inputs(struct CCcontract_info *cp,CMutableTransaction &mtx,CPu
         {
             if ( (nValue= IsCClibvout(cp,vintx,vout,cmpaddr)) > DILITHIUM_TXFEE && myIsutxo_spentinmempool(ignoretxid,ignorevin,txid,vout) == 0 )
             {
-                if ( (dilithium_Qsendopretdecode(checktxid,tmpsig,voutpubtxids,vintx.vout[numvouts-1].scriptPubKey) == 'Q' || dilithium_sendopretdecode(checktxid,vintx.vout[numvouts-1].scriptPubKey) == 'x') && destpubtxid == checktxid )
+                if ( (dilithium_Qsendopretdecode(checktxid,tmpsig,voutpubtxids,vintx.vout[numvouts-1].scriptPubKey) == 'Q' && vout < voutpubtxids.size() && checktxid == voutpubtxids[vout]) || (dilithium_sendopretdecode(checktxid,vintx.vout[numvouts-1].scriptPubKey) == 'x' && destpubtxid == checktxid) )
                 {
                     if ( total != 0 && maxinputs != 0 )
                         mtx.vin.push_back(CTxIn(txid,vout,CScript()));
diff --git a/src/cc/maketetris b/src/cc/maketetris
new file mode 100755
index 000000000..9c2a005a0
--- /dev/null
+++ b/src/cc/maketetris
@@ -0,0 +1,2 @@
+gcc -O3 -std=c++11 -I../secp256k1/include -I../univalue/include -I../cryptoconditions/include -I../cryptoconditions/src -I../cryptoconditions/src/asn -I.. -I. -DSTANDALONE tetris.cpp -lncurses -o tetris
+
diff --git a/src/cc/tetris.cpp b/src/cc/tetris.cpp
index 254c9b135..d6ae473fe 100644
--- a/src/cc/tetris.cpp
+++ b/src/cc/tetris.cpp
@@ -858,7 +858,7 @@ int main(int argc, char **argv)
     next  = newwin(6, 10, 0, 2 * (tg->cols + 1) + 1);
     hold  = newwin(6, 10, 7, 2 * (tg->cols + 1) + 1);
     score = newwin(6, 10, 14, 2 * (tg->cols + 1 ) + 1);
-    
+    int32_t counter = 0;
     // Game loop
     while (running) {
         running = tg_tick(tg, move);
@@ -866,7 +866,8 @@ int main(int argc, char **argv)
         display_piece(next, tg->next);
         display_piece(hold, tg->stored);
         display_score(score, tg);
-        doupdate();
+        if ( (counter++ % 5) == 0 )
+            doupdate();
         sleep_milli(10);
         
         switch (getch()) {