diff --git a/src/test/java/spoon/test/method_overriding/MethodOverriddingTest.java b/src/test/java/spoon/test/method_overriding/MethodOverriddingTest.java
index fd788f3d29a..c2c35fbbf0d 100644
--- a/src/test/java/spoon/test/method_overriding/MethodOverriddingTest.java
+++ b/src/test/java/spoon/test/method_overriding/MethodOverriddingTest.java
@@ -38,6 +38,7 @@ private void checkMethodOverride(BiFunction<CtMethod<?>, CtMethod<?>, Boolean> i
 			}
 			methods.add(m);
 		});
+		assertTrue(methodsByName.size()>0);
 		for (Map.Entry<String, List<CtMethod>> e : methodsByName.entrySet()) {
 			combine(e.getValue(), 0, isOverriding);
 		}