1 files changed, 2 insertions, 2 deletions

diff --git a/subprojects/language/src/test/java/tools/refinery/language/tests/serializer/ProblemSerializerTest.java b/subprojects/language/src/test/java/tools/refinery/language/tests/serializer/ProblemSerializerTest.java
index 3f3a081f..9f4f2bbf 100644
--- a/subprojects/language/src/test/java/tools/refinery/language/tests/serializer/ProblemSerializerTest.java
+++ b/subprojects/language/src/test/java/tools/refinery/language/tests/serializer/ProblemSerializerTest.java
@@ -178,7 +178,7 @@ class ProblemSerializerTest {
                 var variable = ProblemFactory.eINSTANCE.createImplicitVariable();
                 variable.setName("q");
                 conjunction.getImplicitVariables().add(variable);
-                var equals = nodeType.feature("equals");
+                var equals = builtin.pred("equals").get();
                 conjunction.getLiterals().add(createAtom(equals, parameter1, variable));
                 conjunction.getLiterals().add(createAtom(equals, variable, parameter2));
                 pred.getBodies().add(conjunction);
@@ -212,7 +212,7 @@ class ProblemSerializerTest {
                 pred.getParameters().add(parameter);
                 var conjunction = ProblemFactory.eINSTANCE.createConjunction();
                 var atom = ProblemFactory.eINSTANCE.createAtom();
-                var equals = nodeType.feature("equals");
+                var equals = builtin.pred("equals").get();
                 atom.setRelation(equals);
                 var arg1 = ProblemFactory.eINSTANCE.createVariableOrNodeExpr();
                 arg1.setVariableOrNode(parameter);