diff --git a/examples/gno.land/r/gov/dao/v2/prop4_filetest.gno b/examples/gno.land/r/gov/dao/v2/prop4_filetest.gno
deleted file mode 100644
index 13ca572c512..00000000000
--- a/examples/gno.land/r/gov/dao/v2/prop4_filetest.gno
+++ /dev/null
@@ -1,132 +0,0 @@
-package main
-
-import (
-	"gno.land/p/demo/dao"
-	"gno.land/r/gov/dao/bridge"
-	govdaov2 "gno.land/r/gov/dao/v2"
-	"gno.land/r/sys/params"
-)
-
-func init() {
-	mExec := params.NewStringPropExecutor("prop1.string", "value1")
-	title := "Setting prop1.string param"
-	comment := "setting prop1.string param"
-	prop := dao.ProposalRequest{
-		Title:       title,
-		Description: comment,
-		Executor:    mExec,
-	}
-	id := bridge.GovDAO().Propose(prop)
-	println("new prop", id)
-}
-
-func main() {
-	println("--")
-	println(govdaov2.Render(""))
-	println("--")
-	println(govdaov2.Render("0"))
-	println("--")
-	bridge.GovDAO().VoteOnProposal(0, "YES")
-	println("--")
-	println(govdaov2.Render("0"))
-	println("--")
-	bridge.GovDAO().ExecuteProposal(0)
-	println("--")
-	println(govdaov2.Render("0"))
-}
-
-// Output:
-// new prop 0
-// --
-// # GovDAO Proposals
-//
-// ## [Prop #0 - Setting prop1.string param](/r/gov/dao/v2:0)
-//
-// **Status: ACTIVE**
-//
-// **Author: g1wymu47drhr0kuq2098m792lytgtj2nyx77yrsm**
-//
-//
-// --
-// # Proposal #0 - Setting prop1.string param
-//
-// ## Description
-//
-// setting prop1.string param
-//
-// ## Proposal information
-//
-// **Status: ACTIVE**
-//
-// **Voting stats:**
-// - YES 0 (0%)
-// - NO 0 (0%)
-// - ABSTAIN 0 (0%)
-// - MISSING VOTES 10 (100%)
-//
-//
-// **Threshold met: FALSE**
-//
-// **Author: g1wymu47drhr0kuq2098m792lytgtj2nyx77yrsm**
-//
-// ### Actions
-//
-// #### [[Vote YES](/r/gov/dao/v2$help&func=VoteOnProposal&id=0&option=YES)] - [[Vote NO](/r/gov/dao/v2$help&func=VoteOnProposal&id=0&option=NO)] - [[Vote ABSTAIN](/r/gov/dao/v2$help&func=VoteOnProposal&id=0&option=ABSTAIN)]
-//
-//
-// --
-// --
-// # Proposal #0 - Setting prop1.string param
-//
-// ## Description
-//
-// setting prop1.string param
-//
-// ## Proposal information
-//
-// **Status: ACCEPTED**
-//
-// **Voting stats:**
-// - YES 10 (100%)
-// - NO 0 (0%)
-// - ABSTAIN 0 (0%)
-// - MISSING VOTES 0 (0%)
-//
-//
-// **Threshold met: TRUE**
-//
-// **Author: g1wymu47drhr0kuq2098m792lytgtj2nyx77yrsm**
-//
-// ### Actions
-//
-// The voting period for this proposal is over.
-//
-//
-// --
-// --
-// # Proposal #0 - Setting prop1.string param
-//
-// ## Description
-//
-// setting prop1.string param
-//
-// ## Proposal information
-//
-// **Status: EXECUTION SUCCESSFUL**
-//
-// **Voting stats:**
-// - YES 10 (100%)
-// - NO 0 (0%)
-// - ABSTAIN 0 (0%)
-// - MISSING VOTES 0 (0%)
-//
-//
-// **Threshold met: TRUE**
-//
-// **Author: g1wymu47drhr0kuq2098m792lytgtj2nyx77yrsm**
-//
-// ### Actions
-//
-// The voting period for this proposal is over.
-//
-//
diff --git a/tm2/pkg/sdk/params/keeper_test.go b/tm2/pkg/sdk/params/keeper_test.go
index 3c1c53c5f7e..bbfcfe2ba06 100644
--- a/tm2/pkg/sdk/params/keeper_test.go
+++ b/tm2/pkg/sdk/params/keeper_test.go
@@ -147,17 +147,18 @@ type Params struct {
 }
 
 func TestGetAndSetParams(t *testing.T) {
+	prefix := "params_test"
 	env := setupTestEnv()
 	ctx := env.ctx
 	keeper := env.keeper
 	// SetParams
 	a := Params{p1: 1, p2: "a"}
-	err := keeper.SetParams(ctx, ModuleName, "p", a)
+	err := keeper.SetParams(ctx, prefix, "p", a)
 	require.NoError(t, err)
 
 	// GetParams
 	a1 := Params{}
-	_, err1 := keeper.GetParams(ctx, ModuleName, "p", &a1)
+	_, err1 := keeper.GetParams(ctx, prefix, "p", &a1)
 	require.NoError(t, err1)
 	require.True(t, amino.DeepEqual(a, a1), "a and a1 should equal")
 }
diff --git a/tm2/pkg/sdk/params/test_common.go b/tm2/pkg/sdk/params/test_common.go
index 8e785f89cd5..ef240d86d12 100644
--- a/tm2/pkg/sdk/params/test_common.go
+++ b/tm2/pkg/sdk/params/test_common.go
@@ -23,8 +23,9 @@ func setupTestEnv() testEnv {
 	ms.MountStoreWithDB(paramsCapKey, iavl.StoreConstructor, db)
 	ms.LoadLatestVersion()
 
+	prefix := "params_test"
 	km := NewPrefixKeyMapper()
-	km.RegisterPrefix(ModuleName)
+	km.RegisterPrefix(prefix)
 	keeper := NewParamsKeeper(paramsCapKey, km)
 
 	ctx := sdk.NewContext(sdk.RunTxModeDeliver, ms, &bft.Header{Height: 1, ChainID: "test-chain-id"}, log.NewNoopLogger())