diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5a13333..5a7ece0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -361,6 +361,7 @@ if(CMAKE_USE_SECTRANSP)
   list(APPEND CURL_LIBS "${COREFOUNDATION_FRAMEWORK}" "${SECURITY_FRAMEWORK}")
 endif()
 
+set(USE_OPENSSL OFF)
 if(CMAKE_USE_OPENSSL)
   find_package(OpenSSL REQUIRED)
   set(SSL_ENABLED ON)
