diff --git a/tool/CMakeLists.txt b/tool/CMakeLists.txt
index 74c1ac8..4bb6ca2 100644
--- a/tool/CMakeLists.txt
+++ b/tool/CMakeLists.txt
@@ -15,8 +15,4 @@
   transport_common.cc
 )
 
-if (APPLE OR WIN32 OR ANDROID)
-  target_link_libraries(bssl ssl crypto)
-else()
-  target_link_libraries(bssl ssl crypto -lrt)
-endif()
+target_link_libraries(bssl ssl crypto)