diff --git a/src/core.h b/src/core.h
index 3ba7a207..101b46a5 100644
--- a/src/core.h
+++ b/src/core.h
@@ -43,11 +43,11 @@ static const int BLOCK_VERSION_CHAIN_START = (1 << 16);
 static const int BLOCK_VERSION_CHAIN_END = (1 << 30);
 
 static const int AUXPOW_CHAIN_ID = 0x005A;
-static const int AUXPOW_START_MAINNET = 1333000;
+static const int AUXPOW_START_MAINNET = 1400000;
 static const int AUXPOW_START_TESTNET = 1;
 
-static const int Phase2Timespan_Start = 1333010;
-static const int GeoAvgWork_Start = 1333020;
+static const int Phase2Timespan_Start = 1400010;
+static const int GeoAvgWork_Start = 1400020;
 
 inline int GetAlgo(int nVersion)
 {
diff --git a/src/main.cpp b/src/main.cpp
index 67f27d8d..45853523 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1524,7 +1524,7 @@ bool CBlockHeader::CheckProofOfWork(int nHeight) const
 {
 	int algo = GetAlgo();
     if ( (nHeight >= GetAuxPowStartBlock()) &&
-         ((algo == ALGO_SHA256D) || (algo == ALGO_SCRYPT) || (algo == ALGO_QUBIT)) )
+         ((algo == ALGO_SHA256D) || (algo == ALGO_SCRYPT))
     {
         // Prevent same work from being submitted twice:
         // - this block must have our chain ID