diff --git a/source/engine/traverse.js b/source/engine/traverse.js
index 047b45b58..ec595e73a 100644
--- a/source/engine/traverse.js
+++ b/source/engine/traverse.js
@@ -337,10 +337,11 @@ let mecanismSelection = (recurse,k,v) => {
 	let explanation = recurse(v['cherche'])
 
 	let evaluate = (situationGate, parsedRules, node) => {		
-		let collectMissing = node => node.explanation.nodeValue ? [] : collectNodeMissing(node.explanation),
+		let collectMissing = node => collectNodeMissing(node.explanation),
+			explanation = evaluateNode(situationGate, parsedRules, node.explanation),
 			dataSource = findRuleByName(parsedRules, dataSourceName),
-			dataKey = evaluateNode(situationGate, parsedRules, explanation).nodeValue,
 			data = dataSource ? dataSource['data'] : null,
+			dataKey = explanation.nodeValue,
 			dataItems = (data && dataKey && dataSearchField) ? R.filter(item => item[dataSearchField] == dataKey, data) : null,
 			dataItemValues = dataItems ? R.values(dataItems) : null,
 			// TODO - over-specific! transform the JSON instead
@@ -363,6 +364,7 @@ let mecanismSelection = (recurse,k,v) => {
 
 	return {
 		evaluate,
+		explanation,
 		jsx
 	}
 }
diff --git a/test/generateQuestions.test.js b/test/generateQuestions.test.js
index 851cb586e..a3e1b0a98 100644
--- a/test/generateQuestions.test.js
+++ b/test/generateQuestions.test.js
@@ -265,16 +265,16 @@ describe('buildNextSteps', function() {
   });
 
   it('should generate questions from the real rules, experimental version', function() {
-    let stateSelector = (name) => ({"contrat salarié . type de contrat":"CDI"})[name]
+    let stateSelector = (name) => ({"contrat salarié . type de contrat":"CDI","entreprise . effectif":"50"})[name]
 
     let rules = realRules.map(enrichRule),
         situation = analyseTopDown(rules,"Salaire")(stateSelector),
         objectives = getObjectives(stateSelector, situation.root, situation.parsedRules),
+        missing = collectMissingVariables()(stateSelector,situation),
         result = buildNextSteps(stateSelector, rules, situation)
 
     expect(R.path(["question","props","label"])(result[0])).to.equal("Quel est le salaire brut ?")
     expect(R.path(["question","props","label"])(result[1])).to.equal("Le salarié a-t-il le statut cadre ?")
-    expect(R.path(["question","props","label"])(result[2])).to.equal("Quel est l'effectif de l'entreprise ?")
   });
 
 });