diff --git a/source/components/SalaryExplanation.js b/source/components/SalaryExplanation.js
index 08c3d5a49..853ef19b6 100644
--- a/source/components/SalaryExplanation.js
+++ b/source/components/SalaryExplanation.js
@@ -1,14 +1,14 @@
-import { startConversation } from 'Actions/actions';
-import withTracker from 'Components/utils/withTracker';
-import { compose } from 'ramda';
-import React, { Component } from 'react';
-import { connect } from 'react-redux';
-import { formValueSelector } from 'redux-form';
-import ficheDePaieSelectors from 'Selectors/ficheDePaieSelectors';
-import * as Animate from 'Ui/animate';
-import SalaryCompactExplanation from './SalaryCompactExplanation';
-import './SalaryCompactExplanation.css';
-import SalaryFirstExplanation from './SalaryFirstExplanation';
+import { startConversation } from 'Actions/actions'
+import withTracker from 'Components/utils/withTracker'
+import { compose } from 'ramda'
+import React, { Component } from 'react'
+import { connect } from 'react-redux'
+import { formValueSelector } from 'redux-form'
+import ficheDePaieSelectors from 'Selectors/ficheDePaieSelectors'
+import * as Animate from 'Ui/animate'
+import SalaryCompactExplanation from './SalaryCompactExplanation'
+import './SalaryCompactExplanation.css'
+import SalaryFirstExplanation from './SalaryFirstExplanation'
 
 export default compose(
 	withTracker,
diff --git a/source/components/Simulation.js b/source/components/Simulation.js
index 8e3bb4b27..5ba2c99a2 100644
--- a/source/components/Simulation.js
+++ b/source/components/Simulation.js
@@ -7,7 +7,6 @@ import { compose } from 'ramda'
 import { connect } from 'react-redux'
 import {
 	nextStepsSelector,
-	noUserInputSelector,
 	noUserInputSelector
 } from 'Selectors/analyseSelectors'
 import Animate from 'Ui/animate'
@@ -20,8 +19,7 @@ export default compose(
 			previousAnswers: state.conversationSteps.foldedSteps,
 			noNextSteps:
 				state.conversationStarted && nextStepsSelector(state).length == 0,
-			noUserInput: noUserInputSelector(state),
-			userInput: !noUserInputSelector(state)
+			noUserInput: noUserInputSelector(state)
 		}),
 		{ resetSimulation }
 	)
diff --git a/source/selectors/regleSelectors.js b/source/selectors/regleSelectors.js
index 462652a8e..94598b86e 100644
--- a/source/selectors/regleSelectors.js
+++ b/source/selectors/regleSelectors.js
@@ -72,6 +72,8 @@ export const règleValeurSelector: InputSelector<
 			(analysis.cache[dottedName] ||
 				analysis.targets.find(target => target.dottedName === dottedName))
 
+		if (rule == undefined) return null
+
 		let valeur =
 			rule && !isNil(rule.nodeValue)
 				? rule.nodeValue
@@ -103,6 +105,7 @@ export const règleValeurSelector: InputSelector<
 			(!Number.isNaN(valeur) && Number.isNaN(Number.parseFloat(valeur))
 				? 'string'
 				: 'number')
+
 		return {
 			type,
 			valeur: