diff --git a/tests/chunks/consumer.t.cpp b/tests/chunks/consumer.t.cpp
index 126f13a..b1231dc 100644
--- a/tests/chunks/consumer.t.cpp
+++ b/tests/chunks/consumer.t.cpp
@@ -125,7 +125,7 @@
   BOOST_CHECK(output.is_equal(testStrings[2]));
 }
 
-class PipelineInterestsDummy : public PipelineInterests
+class PipelineInterestsDummy final : public PipelineInterests
 {
 public:
   using PipelineInterests::PipelineInterests;