diff --git a/x/staking/keeper/old_slash_test.go b/x/staking/keeper/old_slash_test.go
index f59ad9f803..61fe22d04b 100644
--- a/x/staking/keeper/old_slash_test.go
+++ b/x/staking/keeper/old_slash_test.go
@@ -37,38 +37,6 @@ func setupHelper(t *testing.T, power int64) (sdk.Context, Keeper, types.Params)
 
 //_________________________________________________________________________________
 
-// test slash at a negative height
-// this just represents pre-genesis and should have the same effect as slashing at height 0
-func TestSlashAtNegativeHeight(t *testing.T) {
-	ctx, keeper, _ := setupHelper(t, 10)
-	consAddr := sdk.ConsAddress(PKs[0].Address())
-	fraction := sdk.NewDecWithPrec(5, 1)
-
-	bondedPool := keeper.GetBondedPool(ctx)
-	oldBondedPoolBalances := keeper.bankKeeper.GetAllBalances(ctx, bondedPool.GetAddress())
-
-	validator, found := keeper.GetValidatorByConsAddr(ctx, consAddr)
-	require.True(t, found)
-	keeper.Slash(ctx, consAddr, -2, 10, fraction)
-
-	// read updated state
-	validator, found = keeper.GetValidatorByConsAddr(ctx, consAddr)
-	require.True(t, found)
-
-	// end block
-	updates := keeper.ApplyAndReturnValidatorSetUpdates(ctx)
-	require.Equal(t, 1, len(updates), "cons addr: %v, updates: %v", []byte(consAddr), updates)
-
-	validator = keeper.mustGetValidator(ctx, validator.OperatorAddress)
-	// power decreased
-	require.Equal(t, int64(5), validator.GetConsensusPower())
-
-	// pool bonded shares decreased
-	newBondedPoolBalances := keeper.bankKeeper.GetAllBalances(ctx, bondedPool.GetAddress())
-	diffTokens := oldBondedPoolBalances.Sub(newBondedPoolBalances).AmountOf(keeper.BondDenom(ctx))
-	require.Equal(t, sdk.TokensFromConsensusPower(5).String(), diffTokens.String())
-}
-
 // tests Slash at the current height
 func TestSlashValidatorAtCurrentHeight(t *testing.T) {
 	ctx, keeper, _ := setupHelper(t, 10)
diff --git a/x/staking/keeper/slash_test.go b/x/staking/keeper/slash_test.go
index 3aed1a8e15..7630824b99 100644
--- a/x/staking/keeper/slash_test.go
+++ b/x/staking/keeper/slash_test.go
@@ -4,6 +4,8 @@ import (
 	"testing"
 	"time"
 
+	"github.com/cosmos/cosmos-sdk/x/supply"
+
 	abci "github.com/tendermint/tendermint/abci/types"
 
 	"github.com/cosmos/cosmos-sdk/simapp"
@@ -35,6 +37,8 @@ func initConfig(t *testing.T, power int64) (*simapp.SimApp, sdk.Context, []sdk.A
 	require.NoError(t, err)
 	app.SupplyKeeper.SetModuleAccount(ctx, bondedPool)
 
+	app.SupplyKeeper.SetSupply(ctx, supply.NewSupply(totalSupply))
+
 	for i := int64(0); i < numVals; i++ {
 		validator := types.NewValidator(addrVals[i], PKs[i], types.Description{})
 		validator, _ = validator.AddTokensFromDel(amt)
@@ -189,3 +193,36 @@ func TestSlashAtFutureHeight(t *testing.T) {
 	fraction := sdk.NewDecWithPrec(5, 1)
 	require.Panics(t, func() { app.StakingKeeper.Slash(ctx, consAddr, 1, 10, fraction) })
 }
+
+// test slash at a negative height
+// this just represents pre-genesis and should have the same effect as slashing at height 0
+func TestSlashAtNegativeHeight(t *testing.T) {
+	app, ctx, _, _ := initConfig(t, 10)
+	consAddr := sdk.ConsAddress(PKs[0].Address())
+	fraction := sdk.NewDecWithPrec(5, 1)
+
+	bondedPool := app.StakingKeeper.GetBondedPool(ctx)
+	oldBondedPoolBalances := app.BankKeeper.GetAllBalances(ctx, bondedPool.GetAddress())
+
+	validator, found := app.StakingKeeper.GetValidatorByConsAddr(ctx, consAddr)
+	require.True(t, found)
+	app.StakingKeeper.Slash(ctx, consAddr, -2, 10, fraction)
+
+	// read updated state
+	validator, found = app.StakingKeeper.GetValidatorByConsAddr(ctx, consAddr)
+	require.True(t, found)
+
+	// end block
+	updates := app.StakingKeeper.ApplyAndReturnValidatorSetUpdates(ctx)
+	require.Equal(t, 1, len(updates), "cons addr: %v, updates: %v", []byte(consAddr), updates)
+
+	validator, found = app.StakingKeeper.GetValidator(ctx, validator.OperatorAddress)
+	require.True(t, found)
+	// power decreased
+	require.Equal(t, int64(5), validator.GetConsensusPower())
+
+	// pool bonded shares decreased
+	newBondedPoolBalances := app.BankKeeper.GetAllBalances(ctx, bondedPool.GetAddress())
+	diffTokens := oldBondedPoolBalances.Sub(newBondedPoolBalances).AmountOf(app.StakingKeeper.BondDenom(ctx))
+	require.Equal(t, sdk.TokensFromConsensusPower(5).String(), diffTokens.String())
+}