diff --git a/src/chain.h b/src/chain.h
index 1c88d441cb..9879f19f41 100644
--- a/src/chain.h
+++ b/src/chain.h
@@ -535,9 +535,18 @@ class CDiskBlockIndex : public CBlockIndex
                 READWRITE(anonymitySetHash);
         }
 
-        if (!(s.GetType() & SER_GETHASH) && nHeight >= params.nEvoSporkStartBlock && nHeight < params.nEvoSporkStopBlock)
-            READWRITE(activeDisablingSporks);
-
+        if (!(s.GetType() & SER_GETHASH) && nHeight >= params.nEvoSporkStartBlock) {
+            if (nHeight < params.nEvoSporkStopBlock &&
+                // Workaround for late rollout of version 0.14.9.3 in which nEvoSporkStopBlock was extended
+                // If version of a record for block is less than 140903 and nHeight is greater than previous value
+                // of nEvoSporkStopBlock we don't read activeDisablingSpork from index database
+                !(params.nEvoSporkStopBlockExtensionVersion != 0 &&
+                    nVersion < params.nEvoSporkStopBlockExtensionVersion &&
+                    nHeight >= params.nEvoSporkStopBlockPrevious &&
+                    nHeight < params.nEvoSporkStopBlockPrevious + params.nEvoSporkStopBlockExtensionGracefulPeriod))
+
+                READWRITE(activeDisablingSporks);
+        }
         nDiskBlockVersion = nVersion;
     }
 
diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 7dc7624b3e..4538efcca3 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -411,6 +411,9 @@ class CMainParams : public CChainParams {
         consensus.evoSporkKeyID = "a78fERshquPsTv2TuKMSsxTeKom56uBwLP";
         consensus.nEvoSporkStartBlock = ZC_LELANTUS_STARTING_BLOCK;
         consensus.nEvoSporkStopBlock = ZC_LELANTUS_STARTING_BLOCK + 2*24*12*365;  // two years after lelantus
+        consensus.nEvoSporkStopBlockExtensionVersion = 140903;
+        consensus.nEvoSporkStopBlockPrevious = ZC_LELANTUS_STARTING_BLOCK + 1*24*12*365; // one year after lelantus
+        consensus.nEvoSporkStopBlockExtensionGracefulPeriod = 24*12*14; // two weeks
 
         // reorg
         consensus.nMaxReorgDepth = 5;
@@ -681,6 +684,7 @@ class CTestNetParams : public CChainParams {
         consensus.evoSporkKeyID = "TWSEa1UsZzDHywDG6CZFDNdeJU6LzhbbBL";
         consensus.nEvoSporkStartBlock = 22000;
         consensus.nEvoSporkStopBlock = 40000;
+        consensus.nEvoSporkStopBlockExtensionVersion = 0;
 
         // reorg
         consensus.nMaxReorgDepth = 4;
@@ -898,6 +902,7 @@ class CDevNetParams : public CChainParams {
         consensus.evoSporkKeyID = "TdxR3tfoHiQUkowcfjEGiMBfk6GXFdajUA";
         consensus.nEvoSporkStartBlock = 1;
         consensus.nEvoSporkStopBlock = 40000;
+        consensus.nEvoSporkStopBlockExtensionVersion = 0;
 
         // reorg
         consensus.nMaxReorgDepth = 4;
@@ -1116,6 +1121,7 @@ class CRegTestParams : public CChainParams {
         consensus.evoSporkKeyID = "TSpmHGzQT4KJrubWa4N2CRmpA7wKMMWDg4";  // private key is cW2YM2xaeCaebfpKguBahUAgEzLXgSserWRuD29kSyKHq1TTgwRQ
         consensus.nEvoSporkStartBlock = 1000;
         consensus.nEvoSporkStopBlock = 1500;
+        consensus.nEvoSporkStopBlockExtensionVersion = 0;
 
         // reorg
         consensus.nMaxReorgDepth = 4;
diff --git a/src/consensus/params.h b/src/consensus/params.h
index f34748fb87..1dc7ba4e9b 100644
--- a/src/consensus/params.h
+++ b/src/consensus/params.h
@@ -245,6 +245,16 @@ struct Params {
     // The block number to stop using evo sporks
     int nEvoSporkStopBlock;
 
+    // Workaround for a late rollout of version 0.14.9.3
+    // If non-zero allow special behavior for reading index when block index version < nEvoSporkStopBlockExtensionVersion
+    int nEvoSporkStopBlockExtensionVersion;
+
+    // Previous value of stop block
+    int nEvoSporkStopBlockPrevious;
+
+    // Graceful period (number of blocks) to allow this workaround
+    int nEvoSporkStopBlockExtensionGracefulPeriod;
+
     // Key to sign spork txs
     std::string evoSporkKeyID;