diff --git a/Library/TeamTalkLib/CMakeLists.txt b/Library/TeamTalkLib/CMakeLists.txt
index a97a8e1e1..54307b62f 100644
--- a/Library/TeamTalkLib/CMakeLists.txt
+++ b/Library/TeamTalkLib/CMakeLists.txt
@@ -31,6 +31,20 @@ if (MSVC)
     -D_CRT_NONSTDC_NO_DEPRECATE
     -D_WINSOCK_DEPRECATED_NO_WARNINGS)
 
+  set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /Gy")
+  set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Gy")
+  set (CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO} /Gy")
+  set (CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} /Gy")
+  set (CMAKE_C_FLAGS_MINSIZEREL "${CMAKE_C_FLAGS_MINSIZEREL} /Gy")
+  set (CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} /Gy")
+
+  set (CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG")
+  set (CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} /LTCG")
+  set (CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO} /LTCG")
+  set (CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO} /LTCG")
+  set (CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL} /LTCG")
+  set (CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL "${CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL} /LTCG")
+
   # Use for building TeamTalk toolchain
   set (PLATFORMTOOLSET "/property:PlatformToolset=v143")