diff --git a/CMakeLists.txt b/CMakeLists.txt
index 33b44531..091b25c0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -143,7 +143,7 @@ if (UNIX)
   target_link_libraries(ixwebsocket ${CMAKE_THREAD_LIBS_INIT})
 endif()
 
-if (USE_OPEN_SSL)
+if (USE_TLS AND USE_OPEN_SSL)
   find_package(OpenSSL REQUIRED)
   add_definitions(${OPENSSL_DEFINITIONS})
   message(STATUS "OpenSSL: " ${OPENSSL_VERSION})
@@ -151,7 +151,7 @@ if (USE_OPEN_SSL)
   target_link_libraries(ixwebsocket ${OPENSSL_LIBRARIES})
 endif()
 
-if (USE_MBED_TLS)
+if (USE_TLS AND USE_MBED_TLS)
   if (USE_VENDORED_THIRD_PARTY)
     set (ENABLE_PROGRAMS OFF)
     add_subdirectory(third_party/mbedtls)