diff --git a/Makefile-tests.am b/Makefile-tests.am
index 675547d2..04e2676c 100644
--- a/Makefile-tests.am
+++ b/Makefile-tests.am
@@ -118,8 +118,8 @@ TESTS_CFLAGS = $(ostree_bin_shared_cflags) $(OT_INTERNAL_GIO_UNIX_CFLAGS)
 TESTS_LDADD = $(ostree_bin_shared_ldadd) $(OT_INTERNAL_GIO_UNIX_LIBS)
 
 tests_test_rollsum_SOURCES = src/libostree/ostree-rollsum.c tests/test-rollsum.c
-tests_test_rollsum_CFLAGS = $(TESTS_CFLAGS)
-tests_test_rollsum_LDADD = libbupsplit.la $(TESTS_LDADD)
+tests_test_rollsum_CFLAGS = $(TESTS_CFLAGS) $(OT_DEP_ZLIB_CFLAGS)
+tests_test_rollsum_LDADD = libbupsplit.la $(TESTS_LDADD) $(OT_DEP_ZLIB_LIBS)
 
 tests_test_mutable_tree_CFLAGS = $(TESTS_CFLAGS)
 tests_test_mutable_tree_LDADD = $(TESTS_LDADD)