diff --git a/Demonstration/Demonstration.vcxproj b/Demonstration/Demonstration.vcxproj
index 437cdf3..82f759f 100644
--- a/Demonstration/Demonstration.vcxproj
+++ b/Demonstration/Demonstration.vcxproj
@@ -99,7 +99,7 @@
     <ClCompile>
       <WarningLevel>Level3</WarningLevel>
       <SDLCheck>true</SDLCheck>
-      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions) _CRT_SECURE_NO_WARNINGS</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
diff --git a/Implementation/Implementation.vcxproj b/Implementation/Implementation.vcxproj
index affaa48..a14ed22 100644
--- a/Implementation/Implementation.vcxproj
+++ b/Implementation/Implementation.vcxproj
@@ -98,10 +98,10 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
-      <PrecompiledHeader>Use</PrecompiledHeader>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <SDLCheck>true</SDLCheck>
-      <PreprocessorDefinitions>_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_DEBUG;_LIB;%(PreprocessorDefinitions) _CRT_SECURE_NO_WARNINGS</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
       <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
     </ClCompile>