diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0ac9c68..2c4d15f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -46,7 +46,7 @@ set(SOURCE_FILES ${SOURCE_FILES} main.cpp src/TcpSocket.cpp include/frnetlib/Tcp
 include_directories(include)
 set(CORE_CXX_FLAGS "${CORE_CXX_FLAGS} -std=c++14")
 set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${CORE_CXX_FLAGS} -g -O0")
-set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${CORE_CXX_FLAGS} -O2 -flto")
+set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${CORE_CXX_FLAGS} -O2")
 
 if(USE_SSL)
 	set(FRNETLIB_LINK_LIBRARIES ${FRNETLIB_LINK_LIBRARIES} ${MBEDTLS_LIBRARIES})