diff --git a/src/policy/policy.h b/src/policy/policy.h
index 702471383..ef71dd73b 100644
--- a/src/policy/policy.h
+++ b/src/policy/policy.h
@@ -17,7 +17,7 @@ class CCoinsViewCache;
 class CTxOut;
 
 /** Default for -blockmaxweight, which controls the range of block weights the mining code will create **/
-static const unsigned int DEFAULT_BLOCK_MAX_WEIGHT = 3000000;
+static const unsigned int DEFAULT_BLOCK_MAX_WEIGHT = MAX_BLOCK_WEIGHT - 4000;
 /** Default for -blockmintxfee, which sets the minimum feerate for a transaction in blocks created by mining code **/
 static const unsigned int DEFAULT_BLOCK_MIN_TX_FEE = 1000;
 /** The maximum weight for transactions we're willing to relay/mine */