diff --git a/CMakeLists.txt b/CMakeLists.txt
index 918fb0a..7028802 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -61,7 +61,6 @@ find_package(OpenSSL 1.1.1)
 if (OPENSSL_FOUND)
     set(OPENSSL_SSL OpenSSL::SSL)
     set(OPENSSL_CRYPTO OpenSSL::Crypto)
-    include_directories(${OPENSSL_INCLUDE_DIR})
 elseif (PkgConfig_FOUND)
     message("fallback to check openssl11")
     pkg_check_modules(OPENSSL openssl11)
@@ -102,7 +101,6 @@ endif()
 if (NOT EVENT_CORE)
     find_package(Libevent 2.1 REQUIRED COMPONENTS core)
     set(EVENT_CORE libevent::core)
-    include_directories(${LIBEVENT_INCLUDE_DIRS})
 endif()
 
 add_executable(wss-proxy-client wss-proxy-client.c ws-header.c common.c wss-client.c wss-client-http3.c)