diff --git a/CHANGELOG.md b/CHANGELOG.md
index 96e6c98fe143..b1ea94db8fc0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -42,6 +42,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 * [#20939](https://github.com/cosmos/cosmos-sdk/pull/20939) Fix collection reverse iterator to include `pagination.key` in the result.
 * (client/grpc) [#20969](https://github.com/cosmos/cosmos-sdk/pull/20969) Fix `node.NewQueryServer` method not setting `cfg`.
+* (testutil/integration) [#21006](https://github.com/cosmos/cosmos-sdk/pull/21006) Fix `NewIntegrationApp` method not writing default genesis to state
 
 ## [v0.50.8](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.50.8) - 2024-07-15
 
diff --git a/tests/integration/distribution/keeper/msg_server_test.go b/tests/integration/distribution/keeper/msg_server_test.go
index 86a2d8e626e2..fbb883da63bc 100644
--- a/tests/integration/distribution/keeper/msg_server_test.go
+++ b/tests/integration/distribution/keeper/msg_server_test.go
@@ -276,8 +276,8 @@ func TestMsgWithdrawDelegatorReward(t *testing.T) {
 	}
 	height := f.app.LastBlockHeight()
 
-	_, err = f.distrKeeper.GetPreviousProposerConsAddr(f.sdkCtx)
-	assert.Error(t, err, "previous proposer not set")
+	proposerAddr, _ := f.distrKeeper.GetPreviousProposerConsAddr(f.sdkCtx)
+	assert.Equal(t, proposerAddr.Empty(), true)
 
 	for _, tc := range testCases {
 		tc := tc
diff --git a/testutil/integration/router.go b/testutil/integration/router.go
index 4270d493ad8c..a96c7d72d197 100644
--- a/testutil/integration/router.go
+++ b/testutil/integration/router.go
@@ -59,10 +59,10 @@ func NewIntegrationApp(
 	bApp := baseapp.NewBaseApp(appName, logger, db, txConfig.TxDecoder(), baseapp.SetChainID(appName))
 	bApp.MountKVStores(keys)
 
-	bApp.SetInitChainer(func(ctx sdk.Context, _ *cmtabcitypes.RequestInitChain) (*cmtabcitypes.ResponseInitChain, error) {
+	bApp.SetInitChainer(func(_ sdk.Context, _ *cmtabcitypes.RequestInitChain) (*cmtabcitypes.ResponseInitChain, error) {
 		for _, mod := range modules {
 			if m, ok := mod.(module.HasGenesis); ok {
-				m.InitGenesis(ctx, appCodec, m.DefaultGenesis(appCodec))
+				m.InitGenesis(sdkCtx, appCodec, m.DefaultGenesis(appCodec))
 			}
 		}