diff --git a/source/engine/evaluation.js b/source/engine/evaluation.js
index 6a6a2eee7..3ca441a6a 100644
--- a/source/engine/evaluation.js
+++ b/source/engine/evaluation.js
@@ -23,7 +23,7 @@ export let evaluateArray = (reducer, start, nullable = true) => (situationGate,
 		values = R.pluck("nodeValue",explanation),
 		nodeValue = (nullable && R.any(R.equals(null),values)) ? null : R.reduce(reducer, start, values)
 
-	let collectMissing = node => R.chain(collectNodeMissing,node.explanation)
+	let collectMissing = node => node.nodeValue == null ? R.chain(collectNodeMissing,node.explanation) : []
 	return rewriteNode(node,nodeValue,explanation,collectMissing)
 }
 
diff --git a/test/generateQuestions.test.js b/test/generateQuestions.test.js
index 9a5e612c1..cc5a0abb4 100644
--- a/test/generateQuestions.test.js
+++ b/test/generateQuestions.test.js
@@ -65,6 +65,18 @@ describe('collectMissingVariables', function() {
     expect(result).to.be.empty
   });
 
+  it('should not report missing variables when "one of these" short-circuits', function() {
+    let rawRules = [
+          {nom: "startHere", formule: {somme: [2, "deux"]}, espace: "sum"},
+          {nom: "deux", formule: "trois", "non applicable si" : {"une de ces conditions": ["3 > 2", "trois"]}, espace: "sum"},
+          {nom: "trois", espace: "sum"}],
+        rules = rawRules.map(enrichRule),
+        situation = analyseTopDown(rules,"startHere")(stateSelector),
+        result = collectMissingVariables()(stateSelector,situation)
+
+    expect(result).to.be.empty
+  });
+
 });
 
 describe('buildNextSteps', function() {