fixed typos
diff --git a/tuple/CMakeLists.txt b/tuple/CMakeLists.txt
index f00b5ab..62085e7 100644
--- a/tuple/CMakeLists.txt
+++ b/tuple/CMakeLists.txt
@@ -38,9 +38,9 @@
 list(APPEND tuple_HEADERS "include/tuple_intersection.hpp;include/tuple_intersection_impl.hpp")
 list(APPEND tuple_HEADERS "include/tuple_a_not_b.hpp;include/tuple_a_not_b_impl.hpp")
 list(APPEND tuple_HEADERS "include/array_of_doubles_sketch.hpp;include/array_of_doubles_sketch_impl.hpp")
-list(APPEND tuple_HEADERS "include/array_of_doubles_union.hpp;include/array_of_doulbes_union_impl.hpp")
-list(APPEND tuple_HEADERS "include/array_of_doubles_intersection.hpp;include/array_of_doulbes_intersection_impl.hpp")
-list(APPEND tuple_HEADERS "include/array_of_doubles_a_not_b.hpp;include/array_of_doulbes__ot_b_impl.hpp")
+list(APPEND tuple_HEADERS "include/array_of_doubles_union.hpp;include/array_of_doubles_union_impl.hpp")
+list(APPEND tuple_HEADERS "include/array_of_doubles_intersection.hpp;include/array_of_doubles_intersection_impl.hpp")
+list(APPEND tuple_HEADERS "include/array_of_doubles_a_not_b.hpp;include/array_of_doubles_a_not_b_impl.hpp")
 list(APPEND tuple_HEADERS "include/theta_update_sketch_base.hpp;include/theta_update_sketch_base_impl.hpp")
 list(APPEND tuple_HEADERS "include/theta_union_base.hpp;include/theta_union_base_impl.hpp")
 list(APPEND tuple_HEADERS "include/theta_intersection_base.hpp;include/theta_intersection_base_impl.hpp")