diff --git a/app/sim_test.go b/app/sim_test.go
index f2a712cd72..c4e1cebdc0 100644
--- a/app/sim_test.go
+++ b/app/sim_test.go
@@ -123,6 +123,8 @@ func TestAppImportExport(t *testing.T) {
 		require.NoError(t, os.RemoveAll(newDir))
 	}()
 
+	appOptions[flags.FlagHome] = t.TempDir() // ensure a unique folder for the new app
+
 	newApp := NewWasmApp(log.NewNopLogger(), newDB, nil, true, appOptions, emptyWasmOpts, fauxMerkleModeOpt, baseapp.SetChainID(SimAppChainID))
 	require.Equal(t, "WasmApp", newApp.Name())