diff --git a/lib/lua/CMakeLists.txt b/lib/lua/CMakeLists.txt
index 4a77578dd..9052da194 100644
--- a/lib/lua/CMakeLists.txt
+++ b/lib/lua/CMakeLists.txt
@@ -27,6 +27,7 @@ if (WIN32)
 		SET_TARGET_PROPERTIES(lua PROPERTIES PREFIX "../")
 		SET_TARGET_PROPERTIES(lua PROPERTIES IMPORT_PREFIX "../")
 
+		# Remove SCL warnings, we expect this library to have been tested safe
 		SET_TARGET_PROPERTIES(
 			lua PROPERTIES COMPILE_FLAGS "-D_CRT_SECURE_NO_WARNINGS"
 		)
diff --git a/lib/zlib/CMakeLists.txt b/lib/zlib/CMakeLists.txt
index fe6dba6ae..b1b74031d 100644
--- a/lib/zlib/CMakeLists.txt
+++ b/lib/zlib/CMakeLists.txt
@@ -9,3 +9,11 @@ file(GLOB SOURCE
 )
 
 add_library(zlib ${SOURCE})
+
+if (MSVC)
+	# Remove SCL warnings, we expect this library to have been tested safe
+	SET_TARGET_PROPERTIES(
+		zlib PROPERTIES COMPILE_FLAGS "-D_CRT_SECURE_NO_WARNINGS"
+	)
+endif()
+