diff --git a/Visual Studio Projects/VAX730.vcproj b/Visual Studio Projects/VAX730.vcproj
index 3fb08fd5..2142cea3 100644
--- a/Visual Studio Projects/VAX730.vcproj	
+++ b/Visual Studio Projects/VAX730.vcproj	
@@ -45,7 +45,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="./;../;../VAX/;../pdp11/;../../winpcap/Wpdpack/Include;"../../pthreads/Pre-built.2/include""
-				PreprocessorDefinitions="USE_INT64;USE_ADDR64;VM_VAX;VAX_730;USE_SHARED;_CRT_SECURE_NO_WARNINGS;USE_READER_THREAD;SIM_ASYNCH_IO"
+				PreprocessorDefinitions="USE_INT64;USE_ADDR64;VM_VAX;VAX_730;USE_SHARED;_CRT_NONSTDC_NO_WARNINGS;_CRT_SECURE_NO_WARNINGS;USE_READER_THREAD;SIM_ASYNCH_IO"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="0"
 				RuntimeLibrary="1"
@@ -134,7 +134,7 @@
 				FavorSizeOrSpeed="1"
 				OmitFramePointers="true"
 				AdditionalIncludeDirectories="./;../;../VAX/;../pdp11/;../../winpcap/Wpdpack/Include;"../../pthreads/Pre-built.2/include""
-				PreprocessorDefinitions="USE_INT64;USE_ADDR64;VM_VAX;VAX_730;USE_SHARED;_CRT_SECURE_NO_WARNINGS;USE_READER_THREAD;SIM_ASYNCH_IO"
+				PreprocessorDefinitions="USE_INT64;USE_ADDR64;VM_VAX;VAX_730;USE_SHARED;_CRT_NONSTDC_NO_WARNINGS;_CRT_SECURE_NO_WARNINGS;USE_READER_THREAD;SIM_ASYNCH_IO"
 				StringPooling="true"
 				RuntimeLibrary="0"
 				EnableFunctionLevelLinking="true"