diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 57d0a24..260067a 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -1,4 +1,4 @@
-link_libraries(check oceanography pthread rt)
+link_libraries(check oceanography pthread rt subunit)
 
 add_executable(test_oceanography test_oceanography.c)