diff --git a/satellite/repair/checker/config.go b/satellite/repair/checker/config.go
index c5b7f2c69..23749e299 100644
--- a/satellite/repair/checker/config.go
+++ b/satellite/repair/checker/config.go
@@ -24,7 +24,7 @@ type Config struct {
 	NodeFailureRate            float64  `help:"the probability of a single node going down within the next checker iteration" default:"0.00005435" `
 	RepairQueueInsertBatchSize int      `help:"Number of damaged segments to buffer in-memory before flushing to the repair queue" default:"100" `
 	RepairExcludedCountryCodes []string `help:"list of country codes to treat node from this country as offline " default:"" hidden:"true"`
-	DoDeclumping               bool     `help:"Treat pieces on the same network as in need of repair" default:"false"`
+	DoDeclumping               bool     `help:"Treat pieces on the same network as in need of repair" default:"true"`
 	DoPlacementCheck           bool     `help:"Treat pieces out of segment placement as in need of repair" default:"true"`
 }
 
diff --git a/satellite/repair/repairer/repairer.go b/satellite/repair/repairer/repairer.go
index 21a3d9787..53b700ed3 100644
--- a/satellite/repair/repairer/repairer.go
+++ b/satellite/repair/repairer/repairer.go
@@ -37,7 +37,7 @@ type Config struct {
 	ReputationUpdateEnabled       bool          `help:"whether the audit score of nodes should be updated as a part of repair" default:"false"`
 	UseRangedLoop                 bool          `help:"whether to enable repair checker observer with ranged loop" default:"true"`
 	RepairExcludedCountryCodes    []string      `help:"list of country codes to treat node from this country as offline" default:"" hidden:"true"`
-	DoDeclumping                  bool          `help:"repair pieces on the same network to other nodes" default:"false"`
+	DoDeclumping                  bool          `help:"repair pieces on the same network to other nodes" default:"true"`
 	DoPlacementCheck              bool          `help:"repair pieces out of segment placement" default:"true"`
 }
 
diff --git a/satellite/repair/repairer/segments_test.go b/satellite/repair/repairer/segments_test.go
index 6d88ad47b..89348738b 100644
--- a/satellite/repair/repairer/segments_test.go
+++ b/satellite/repair/repairer/segments_test.go
@@ -31,7 +31,12 @@ func TestSegmentRepairPlacement(t *testing.T) {
 	testplanet.Run(t, testplanet.Config{
 		SatelliteCount: 1, StorageNodeCount: 12, UplinkCount: 1,
 		Reconfigure: testplanet.Reconfigure{
-			Satellite: testplanet.ReconfigureRS(1, 1, piecesCount, piecesCount),
+			Satellite: testplanet.Combine(
+				testplanet.ReconfigureRS(1, 1, piecesCount, piecesCount),
+				func(log *zap.Logger, index int, config *satellite.Config) {
+					config.Repairer.DoDeclumping = false
+				},
+			),
 		},
 	}, func(t *testing.T, ctx *testcontext.Context, planet *testplanet.Planet) {
 		require.NoError(t, planet.Uplinks[0].CreateBucket(ctx, planet.Satellites[0], "testbucket"))
diff --git a/scripts/testdata/satellite-config.yaml.lock b/scripts/testdata/satellite-config.yaml.lock
index 66bfae36d..095d6001a 100755
--- a/scripts/testdata/satellite-config.yaml.lock
+++ b/scripts/testdata/satellite-config.yaml.lock
@@ -92,7 +92,7 @@
 # audit.worker-concurrency: 2
 
 # Treat pieces on the same network as in need of repair
-# checker.do-declumping: false
+# checker.do-declumping: true
 
 # Treat pieces out of segment placement as in need of repair
 # checker.do-placement-check: true
@@ -938,7 +938,7 @@ identity.key-path: /root/.local/share/storj/identity/satellite/identity.key
 # repairer.dial-timeout: 5s
 
 # repair pieces on the same network to other nodes
-# repairer.do-declumping: false
+# repairer.do-declumping: true
 
 # repair pieces out of segment placement
 # repairer.do-placement-check: true