diff --git a/ports/win32/msvc8/lwIP.vcproj b/ports/win32/msvc8/lwIP.vcproj
index 9eef870..57a6aff 100644
--- a/ports/win32/msvc8/lwIP.vcproj
+++ b/ports/win32/msvc8/lwIP.vcproj
@@ -46,7 +46,6 @@
 				PreprocessorDefinitions="WIN32;NDEBUG;_LIB"
 				StringPooling="true"
 				RuntimeLibrary="0"
-				StructMemberAlignment="1"
 				EnableFunctionLevelLinking="true"
 				ProgramDataBaseFileName="$(IntDir)/$(ProjectName).pdb"
 				WarningLevel="3"
@@ -117,7 +116,6 @@
 				PreprocessorDefinitions="_LIB;WIN32;_DEBUG;LWIP_DEBUG"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="1"
-				StructMemberAlignment="1"
 				UsePrecompiledHeader="0"
 				ProgramDataBaseFileName="$(IntDir)/$(ProjectName).pdb"
 				WarningLevel="4"
diff --git a/ports/win32/msvc8/lwIP_Test.vcproj b/ports/win32/msvc8/lwIP_Test.vcproj
index 0a66c58..bf4229e 100644
--- a/ports/win32/msvc8/lwIP_Test.vcproj
+++ b/ports/win32/msvc8/lwIP_Test.vcproj
@@ -49,7 +49,6 @@
 				PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE;_CRT_SECURE_NO_DEPRECATE"
 				StringPooling="true"
 				RuntimeLibrary="0"
-				StructMemberAlignment="1"
 				EnableFunctionLevelLinking="true"
 				UsePrecompiledHeader="0"
 				PrecompiledHeaderFile="$(IntDir)/$(TargetName).pch"
@@ -139,7 +138,6 @@
 				PreprocessorDefinitions="_CONSOLE;WIN32;_DEBUG;LWIP_DEBUG;_CRT_SECURE_NO_DEPRECATE"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="1"
-				StructMemberAlignment="1"
 				UsePrecompiledHeader="0"
 				PrecompiledHeaderFile="$(IntDir)/$(TargetName).pch"
 				ProgramDataBaseFileName="$(IntDir)/$(ProjectName).pdb"
diff --git a/ports/win32/msvc8/lwIP_pcapif.vcproj b/ports/win32/msvc8/lwIP_pcapif.vcproj
index 3c21819..6f53581 100644
--- a/ports/win32/msvc8/lwIP_pcapif.vcproj
+++ b/ports/win32/msvc8/lwIP_pcapif.vcproj
@@ -46,7 +46,6 @@
 				PreprocessorDefinitions="_LIB;WIN32;_DEBUG;LWIP_DEBUG"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="1"
-				StructMemberAlignment="0"
 				UsePrecompiledHeader="0"
 				ProgramDataBaseFileName="$(IntDir)/$(ProjectName).pdb"
 				WarningLevel="4"
@@ -118,7 +117,6 @@
 				PreprocessorDefinitions="WIN32;NDEBUG;_LIB"
 				StringPooling="true"
 				RuntimeLibrary="0"
-				StructMemberAlignment="0"
 				EnableFunctionLevelLinking="true"
 				UsePrecompiledHeader="0"
 				PrecompiledHeaderFile="$(IntDir)/$(TargetName).pch"