diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9d44047..b35952a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,7 +12,11 @@ set(CMAKE_CXX_STANDARD_REQUIRED True)
 
 # out the binary to bin folder of source path
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/bin)
+# set env of PKG_CONFIG_PATH of linux path of gtest
 set(ENV{PKG_CONFIG_PATH} "$ENV{PKG_CONFIG_PATH}:/usr/local/lib64/pkgconfig")
+# set env of PKG_CONFIG_PATH of mac path of gtest
+set(ENV{PKG_CONFIG_PATH} "$ENV{PKG_CONFIG_PATH}:/usr/local/Cellar/openssl@1.1/1.1.1f/lib/pkgconfig")
+
 include(FindPkgConfig)
 
 set(BOOST_INCLUDEDIR /usr/include/boost169)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 63208c5..77b8dfa 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -41,7 +41,7 @@ target_link_libraries(ChatServer
     PUBLIC
         Boost::thread
         OpenSSL::SSL
-        penSSL::Crypto
+        OpenSSL::Crypto
 )
 
 target_link_libraries(ChatClient
diff --git a/src/server/CMakeLists.txt b/src/server/CMakeLists.txt
index 2f5a390..11b7294 100644
--- a/src/server/CMakeLists.txt
+++ b/src/server/CMakeLists.txt
@@ -8,7 +8,7 @@ add_library(${PROJECT_NAME}-server OBJECT
 )
 
 target_include_directories(${PROJECT_NAME}-server PUBLIC
-                            ${OPENSSL_INCLUDE_DIR}
+                            #${OPENSSL_INCLUDE_DIR} #for boost 1.72 need this line, for 1.69 not needed.
                             ${Boost_INCLUDE_DIRS}
                             ${CMAKE_SOURCE_DIR}/src/3rdparty
                             )