diff --git a/src/validation.cpp b/src/validation.cpp
index 9d02ecdef..2d2f94300 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -1584,8 +1584,8 @@ static ThresholdConditionCache warningcache[VERSIONBITS_NUM_BITS];
 static unsigned int GetBlockScriptFlags(const CBlockIndex* pindex, const Consensus::Params& consensusparams) {
     AssertLockHeld(cs_main);
 
-    // BIP16 didn't become active until Apr 1 2012
-    int64_t nBIP16SwitchTime = 1333238400;
+    // BIP16 didn't become active until Oct 1 2012
+    int64_t nBIP16SwitchTime = 1349049600;
     bool fStrictPayToScriptHash = (pindex->GetBlockTime() >= nBIP16SwitchTime);
 
     unsigned int flags = fStrictPayToScriptHash ? SCRIPT_VERIFY_P2SH : SCRIPT_VERIFY_NONE;