-txn_test_SRCS := $(TEST_SRCS) struct/hashtable.c txn/txn.c
-ll_test_SRCS := $(TEST_SRCS) struct/list.c test/ll_test.c struct/nstring.c
-sl_test_SRCS := $(TEST_SRCS) struct/skiplist.c test/sl_test.c struct/nstring.c
-ht_test_SRCS := $(TEST_SRCS) struct/hashtable.c test/ht_test.c test/CuTest.c struct/nstring.c
+txn_test_SRCS := $(TEST_SRCS) txn/txn.c
+ll_test_SRCS := $(TEST_SRCS) test/ll_test.c
+sl_test_SRCS := $(TEST_SRCS) test/sl_test.c
+ht_test_SRCS := $(TEST_SRCS) test/ht_test.c test/CuTest.c