diff --git a/CMakeLists.txt b/CMakeLists.txt
index da0ed46..56dd9d7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,11 +2,11 @@ cmake_minimum_required(VERSION 3.6)
 project(cpp11NHF2_chat)
 
 set(CMAKE_CXX_STANDARD 14)
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -pedantic")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -pedantic -pthread")
 
 find_package(Boost COMPONENTS system REQUIRED)
 include_directories(${Boost_INCLUDE_DIR})
 
 set(SOURCE_FILES commandline_chat.cpp chat_messages.hpp chat_networking.hpp)
 add_executable(cpp11NHF2_chat ${SOURCE_FILES})
-target_link_libraries(cpp11NHF2_chat ${Boost_LIBRARIES})
\ No newline at end of file
+target_link_libraries(cpp11NHF2_chat ${Boost_LIBRARIES})