diff --git a/src/pow.cpp b/src/pow.cpp
index 38ec0ce36..ad9bd14ac 100644
--- a/src/pow.cpp
+++ b/src/pow.cpp
@@ -169,6 +169,8 @@ bool CheckProofOfWork(int32_t height,uint8_t *pubkey33,uint256 hash, unsigned in
                 flag = ((height % KOMODO_ELECTION_GAP) > 64 || (height % KOMODO_ELECTION_GAP) == 0);
             else if ( height == 790833 )
                 flag = 1;
+            else if ( special2 < 0 )
+                flag = 0;
         }
         if ( flag != 0 || special2 > 0 )
         {