diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4512af415f..d5428f15de 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 2.8)
 project(ntcore)
 
 if (MSVC)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /DNOMINMAX /D_SCL_SECURE_NO_WARNINGS")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /DNOMINMAX /D_SCL_SECURE_NO_WARNINGS /D_WINSOCK_DEPRECATED_NO_WARNINGS")
 else()
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1y -Wformat=2 -Wall -Wextra -Werror -pedantic -Wno-unused-parameter")
 endif()
diff --git a/build.gradle b/build.gradle
index 76aafaa5c6..82b2e79e77 100644
--- a/build.gradle
+++ b/build.gradle
@@ -78,7 +78,7 @@ model {
                 }
                 eachPlatform {
                     cppCompiler.withArguments { args ->
-                        args << '/EHsc' << '/DNOMINMAX' << '/D_SCL_SECURE_NO_WARNINGS'
+                        args << '/EHsc' << '/DNOMINMAX' << '/D_SCL_SECURE_NO_WARNINGS' << '/D_WINSOCK_DEPRECATED_NO_WARNINGS'
                     }
                     linker.withArguments { args ->
                         args << '/DEF:ntcore.def'