diff --git a/harness/engine/profiles.go b/harness/engine/profiles.go
index 7aad87a09..7da96c3ad 100644
--- a/harness/engine/profiles.go
+++ b/harness/engine/profiles.go
@@ -64,7 +64,7 @@ func Profile1(index int, node *DuskNode, consensusKeysPath string) {
 	// viper.Set("mempool.preallocTxs", "100")
 	viper.Set("mempool.poolType", "diskpool")
 	viper.Set("mempool.diskpoolDir", node.Dir+"/mempool.db")
-	viper.Set("mempool.extractionDelaySecs", "3")
+	// viper.Set("mempool.extractionDelaySecs", "3")
 
 	viper.Set("mempool.maxInvItems", "10000")
 	viper.Set("mempool.propagateTimeout", "100ms")
diff --git a/pkg/config/loader.go b/pkg/config/loader.go
index dd6e4a0d6..c6920bdaf 100644
--- a/pkg/config/loader.go
+++ b/pkg/config/loader.go
@@ -253,6 +253,7 @@ func init() {
 	r.General.Network = devnet
 	r.Consensus.ConsensusTimeOut = DefaultConsensusTimeOutSeconds
 	r.Mempool.MaxInvItems = 10000
+	r.Mempool.ExtractionDelaySecs = 3
 	r.State.PersistEvery = 1
 	r.State.BlockGasLimit = DefaultBlockGasLimit
 }