diff --git a/REDALERT/RedAlert.vcxproj b/REDALERT/RedAlert.vcxproj
index 1a65d28..c4d5da2 100644
--- a/REDALERT/RedAlert.vcxproj
+++ b/REDALERT/RedAlert.vcxproj
@@ -95,7 +95,7 @@
       <AdditionalIncludeDirectories>./win32lib</AdditionalIncludeDirectories>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <WholeProgramOptimization>false</WholeProgramOptimization>
-      <PreprocessorDefinitions>TRUE_FALSE_DEFINED;ENGLISH;WIN32;NDEBUG;_WINDOWS;_USRDLL;REDALERT_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>TRUE_FALSE_DEFINED;ENGLISH;WIN32;NDEBUG;_WINDOWS;_USRDLL;REDALERT_EXPORTS;WINDOWS_IGNORE_PACKING_MISMATCH;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <StructMemberAlignment>1Byte</StructMemberAlignment>
       <ExceptionHandling>false</ExceptionHandling>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
diff --git a/TIBERIANDAWN/TiberianDawn.vcxproj b/TIBERIANDAWN/TiberianDawn.vcxproj
index 0d4aab6..f7b9ac5 100644
--- a/TIBERIANDAWN/TiberianDawn.vcxproj
+++ b/TIBERIANDAWN/TiberianDawn.vcxproj
@@ -96,7 +96,7 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>TRUE_FALSE_DEFINED;WIN32;NDEBUG;_WINDOWS;_USRDLL;TIBERIANDAWN_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>TRUE_FALSE_DEFINED;WIN32;NDEBUG;_WINDOWS;_USRDLL;TIBERIANDAWN_EXPORTS;WINDOWS_IGNORE_PACKING_MISMATCH;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalIncludeDirectories>./win32lib</AdditionalIncludeDirectories>
       <DisableSpecificWarnings>4800;4244;4996</DisableSpecificWarnings>
       <ExceptionHandling>false</ExceptionHandling>