diff --git a/src/miner.cpp b/src/miner.cpp
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -562,8 +562,7 @@
     CMutableTransaction txCoinbase(*pblock->vtx[0]);
     txCoinbase.vin[0].scriptSig =
         (CScript() << nHeight << CScriptNum(nExtraNonce)
-                   << getExcessiveBlockSizeSig(nExcessiveBlockSize)) +
-        COINBASE_FLAGS;
+                   << getExcessiveBlockSizeSig(nExcessiveBlockSize));
 
     // Make sure the coinbase is big enough.
     uint64_t coinbaseSize = ::GetSerializeSize(txCoinbase, PROTOCOL_VERSION);
diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp
--- a/src/rpc/mining.cpp
+++ b/src/rpc/mining.cpp
@@ -769,7 +769,6 @@
     }
 
     UniValue aux(UniValue::VOBJ);
-    aux.pushKV("flags", HexStr(COINBASE_FLAGS.begin(), COINBASE_FLAGS.end()));
 
     UniValue minerFundList(UniValue::VARR);
     const Consensus::Params &consensusParams = chainparams.GetConsensus();
diff --git a/src/test/miner_tests.cpp b/src/test/miner_tests.cpp
--- a/src/test/miner_tests.cpp
+++ b/src/test/miner_tests.cpp
@@ -254,8 +254,7 @@
     unsigned int nHeight = ::ChainActive().Tip()->nHeight + 1;
     std::vector<uint8_t> vec(cbmsg.begin(), cbmsg.end());
     BOOST_CHECK(pblock->vtx[0]->vin[0].scriptSig ==
-                ((CScript() << nHeight << CScriptNum(extraNonce) << vec) +
-                 COINBASE_FLAGS));
+                (CScript() << nHeight << CScriptNum(extraNonce) << vec));
 }
 
 // Coinbase scriptSig has to contains the correct EB value
diff --git a/src/validation.h b/src/validation.h
--- a/src/validation.h
+++ b/src/validation.h
@@ -163,7 +163,6 @@
  */
 static const int64_t DEFAULT_MIN_FINALIZATION_DELAY = 2 * 60 * 60;
 
-extern CScript COINBASE_FLAGS;
 extern RecursiveMutex cs_main;
 extern CTxMemPool g_mempool;
 typedef std::unordered_map<BlockHash, CBlockIndex *, BlockHasher> BlockMap;
diff --git a/src/validation.cpp b/src/validation.cpp
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -111,9 +111,6 @@
 
 CTxMemPool g_mempool;
 
-/** Constant stuff for coinbase transactions we create: */
-CScript COINBASE_FLAGS;
-
 // Internal stuff
 namespace {
 CBlockIndex *pindexBestInvalid = nullptr;