diff --git a/test/yulPhaser/Chromosome.cpp b/test/yulPhaser/Chromosome.cpp
index 05f3cc1e8..37b8f7fd9 100644
--- a/test/yulPhaser/Chromosome.cpp
+++ b/test/yulPhaser/Chromosome.cpp
@@ -138,7 +138,7 @@ BOOST_AUTO_TEST_CASE(output_operator_should_create_concise_and_unambiguous_strin
 
 	BOOST_TEST(chromosome.length() == allSteps.size());
 	BOOST_TEST(chromosome.optimisationSteps() == allSteps);
-	BOOST_TEST(toString(chromosome) == "flcCUnDEvejsxIOoighFTLMRrSmVatpud");
+	BOOST_TEST(toString(chromosome) == "flcCUnDEvejsxIOoighFTLMRrSmVatrpuSd");
 }
 
 BOOST_AUTO_TEST_CASE(optimisationSteps_should_translate_chromosomes_genes_to_optimisation_step_names)