diff --git a/engine/dotnet2005/gas2masm.vcproj b/engine/dotnet2005/gas2masm.vcproj
index e8cf953c0..17313dcea 100644
--- a/engine/dotnet2005/gas2masm.vcproj
+++ b/engine/dotnet2005/gas2masm.vcproj
@@ -42,7 +42,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE"
+				PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE"
 				MinimalRebuild="true"
 				RuntimeLibrary="1"
 				PrecompiledHeaderFile="..\gas2masm\Debug\gas2masm.pch"