diff --git a/test/spec/ol/expression/expression.test.js b/test/spec/ol/expression/expression.test.js
index 3deb416d0a..c709ed80a8 100644
--- a/test/spec/ol/expression/expression.test.js
+++ b/test/spec/ol/expression/expression.test.js
@@ -6,7 +6,7 @@ describe('ol.expression.BooleanLiteral', function() {
   describe('constructor', function() {
     var expr = new ol.expression.BooleanLiteral(true);
     expect(expr).to.be.a(ol.expression.Expression);
-    expect(expr).not.to.be.a(ol.expression.BooleanLiteral);
+    expect(expr).to.be.a(ol.expression.BooleanLiteral);
   });
 
 });