diff --git a/app/estimate_square_size_test.go b/app/estimate_square_size_test.go
index a26f1d07..5b0203b5 100644
--- a/app/estimate_square_size_test.go
+++ b/app/estimate_square_size_test.go
@@ -5,8 +5,8 @@ import (
 
 	"github.com/celestiaorg/celestia-app/app/encoding"
 	"github.com/celestiaorg/celestia-app/pkg/appconsts"
-	"github.com/celestiaorg/celestia-app/pkg/namespace"
 	"github.com/celestiaorg/celestia-app/pkg/shares"
+	"github.com/celestiaorg/celestia-app/testutil/namespace"
 	"github.com/celestiaorg/celestia-app/x/payment/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/stretchr/testify/assert"
diff --git a/app/test/block_size_test.go b/app/test/block_size_test.go
index 82697c40..5c8fd0fa 100644
--- a/app/test/block_size_test.go
+++ b/app/test/block_size_test.go
@@ -16,7 +16,7 @@ import (
 	"github.com/celestiaorg/celestia-app/app"
 	"github.com/celestiaorg/celestia-app/app/encoding"
 	"github.com/celestiaorg/celestia-app/pkg/appconsts"
-	"github.com/celestiaorg/celestia-app/pkg/namespace"
+	"github.com/celestiaorg/celestia-app/testutil/namespace"
 	"github.com/celestiaorg/celestia-app/testutil/network"
 	"github.com/celestiaorg/celestia-app/x/payment"
 	"github.com/celestiaorg/celestia-app/x/payment/types"
diff --git a/app/test_util.go b/app/test_util.go
index 86d35ea1..e95d4df5 100644
--- a/app/test_util.go
+++ b/app/test_util.go
@@ -4,7 +4,7 @@ import (
 	"testing"
 
 	"github.com/celestiaorg/celestia-app/app/encoding"
-	"github.com/celestiaorg/celestia-app/pkg/namespace"
+	"github.com/celestiaorg/celestia-app/testutil/namespace"
 	"github.com/celestiaorg/celestia-app/x/payment/types"
 	"github.com/cosmos/cosmos-sdk/client"
 	"github.com/cosmos/cosmos-sdk/codec"
diff --git a/pkg/prove/proof_test.go b/pkg/prove/proof_test.go
index e8783d3c..ccdf5e48 100644
--- a/pkg/prove/proof_test.go
+++ b/pkg/prove/proof_test.go
@@ -5,8 +5,8 @@ import (
 	"testing"
 
 	"github.com/celestiaorg/celestia-app/pkg/appconsts"
-	"github.com/celestiaorg/celestia-app/pkg/namespace"
 	"github.com/celestiaorg/celestia-app/pkg/shares"
+	"github.com/celestiaorg/celestia-app/testutil/namespace"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	tmrand "github.com/tendermint/tendermint/libs/rand"
diff --git a/pkg/namespace/random_ns_generator.go b/testutil/namespace/random_ns_generator.go
similarity index 100%
rename from pkg/namespace/random_ns_generator.go
rename to testutil/namespace/random_ns_generator.go
diff --git a/testutil/payment/testutil.go b/testutil/payment/testutil.go
index ec96e234..7bca7946 100644
--- a/testutil/payment/testutil.go
+++ b/testutil/payment/testutil.go
@@ -4,7 +4,7 @@ import (
 	"testing"
 
 	"github.com/celestiaorg/celestia-app/app"
-	"github.com/celestiaorg/celestia-app/pkg/namespace"
+	"github.com/celestiaorg/celestia-app/testutil/namespace"
 	"github.com/celestiaorg/celestia-app/x/payment/types"
 	"github.com/cosmos/cosmos-sdk/client"
 	sdk "github.com/cosmos/cosmos-sdk/types"
diff --git a/testutil/testnode/full_node_test.go b/testutil/testnode/full_node_test.go
index 940aa2e8..376d64ee 100644
--- a/testutil/testnode/full_node_test.go
+++ b/testutil/testnode/full_node_test.go
@@ -4,7 +4,7 @@ import (
 	"context"
 	"testing"
 
-	"github.com/celestiaorg/celestia-app/pkg/namespace"
+	"github.com/celestiaorg/celestia-app/testutil/namespace"
 	"github.com/stretchr/testify/suite"
 	tmrand "github.com/tendermint/tendermint/libs/rand"
 	coretypes "github.com/tendermint/tendermint/rpc/core/types"