diff --git a/cpp/tests/lists/drop_list_duplicates_tests.cpp b/cpp/tests/lists/drop_list_duplicates_tests.cpp
index 3f9c4c9cca7..945d138c789 100644
--- a/cpp/tests/lists/drop_list_duplicates_tests.cpp
+++ b/cpp/tests/lists/drop_list_duplicates_tests.cpp
@@ -738,7 +738,7 @@ TYPED_TEST(DropListDuplicatesTypedTest, InputListsOfNestedStructsHaveNull)
 {
   using ColWrapper    = cudf::test::fixed_width_column_wrapper<TypeParam, int32_t>;
   auto constexpr null = int32_t{0};  // nulls at the children columns level
-  // XXX and YY are int placeholders for nulls at parent structs column level.
+  // XXX and YYY are int placeholders for nulls at parent structs column level.
   // We bring up two placeholders of different values to create intra null structs with
   // children of different values, so as to test whether null_equality::EQUAL works or not.
   auto constexpr XXX = int32_t{5};