diff --git a/tests/crypto/CMakeLists.txt b/tests/crypto/CMakeLists.txt
index f42428a6..86946aa5 100644
--- a/tests/crypto/CMakeLists.txt
+++ b/tests/crypto/CMakeLists.txt
@@ -40,7 +40,8 @@ set(crypto_headers
 add_executable(crypto-tests
   ${crypto_sources}
   ${crypto_headers})
-target_link_libraries(crypto-tests)
+target_link_libraries(crypto-tests
+    ${Boost_SYSTEM_LIBRARY})
 set_property(TARGET crypto-tests
   PROPERTY
     FOLDER "tests")