diff --git a/src/miner.h b/src/miner.h
--- a/src/miner.h
+++ b/src/miner.h
@@ -161,14 +161,13 @@
     int64_t nLockTimeCutoff;
     int64_t nMedianTimePast;
 
-    const Config *config;
     const CTxMemPool *mempool;
 
     // Variables used for addPriorityTxs
     int lastFewTxs;
 
 public:
-    BlockAssembler(const Config &_config, const CTxMemPool &mempool);
+    BlockAssembler(const Config &config, const CTxMemPool &mempool);
     /** Construct a new block template with coinbase to scriptPubKeyIn */
     std::unique_ptr<CBlockTemplate>
     CreateNewBlock(const Config &config, const CScript &scriptPubKeyIn);
diff --git a/src/miner.cpp b/src/miner.cpp
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -81,8 +81,8 @@
     return nMaxGeneratedBlockSize;
 }
 
-BlockAssembler::BlockAssembler(const Config &_config, const CTxMemPool &mpool)
-    : config(&_config), mempool(&mpool) {
+BlockAssembler::BlockAssembler(const Config &config, const CTxMemPool &mpool)
+    : mempool(&mpool) {
 
     if (gArgs.IsArgSet("-blockmintxfee")) {
         Amount n = Amount::zero();
@@ -94,7 +94,7 @@
 
     LOCK(cs_main);
     nMaxGeneratedBlockSize =
-        ComputeMaxGeneratedBlockSize(*config, chainActive.Tip());
+        ComputeMaxGeneratedBlockSize(config, chainActive.Tip());
 }
 
 void BlockAssembler::resetBlock() {