diff --git a/visualc/sharedspice.vcxproj b/visualc/sharedspice.vcxproj
index 4b8c78cf0..7cc3c9e61 100644
--- a/visualc/sharedspice.vcxproj
+++ b/visualc/sharedspice.vcxproj
@@ -71,7 +71,7 @@
     <ClCompile>
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\src\maths\poly;..\src\frontend;..\src\spicelib\devices;tmp-bison;src\include;..\src\include;..\src\spicelib\parser;.;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;SIMULATOR;XSPICE;SHARED_MODULE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_CRT_SECURE_NO_DEPRECATE;SIMULATOR;XSPICE;SHARED_MODULE;NGDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PreprocessToFile>false</PreprocessToFile>
       <PreprocessSuppressLineNumbers>false</PreprocessSuppressLineNumbers>
       <MinimalRebuild>false</MinimalRebuild>