Index: src/log4net.Tests/log4net.Tests.vs2008.csproj
===================================================================
--- src/log4net.Tests/log4net.Tests.vs2008.csproj	(revision 1710414)
+++ src/log4net.Tests/log4net.Tests.vs2008.csproj	(working copy)
@@ -57,7 +57,7 @@
     <CheckForOverflowUnderflow>false</CheckForOverflowUnderflow>
     <ConfigurationOverrideFile>
     </ConfigurationOverrideFile>
-    <DefineConstants>TRACE;DEBUG</DefineConstants>
+    <DefineConstants>TRACE;DEBUG;DOTNET;FRAMEWORK_3_5_OR_ABOVE</DefineConstants>
     <DocumentationFile>
     </DocumentationFile>
     <DebugSymbols>true</DebugSymbols>
@@ -77,7 +77,7 @@
     <CheckForOverflowUnderflow>false</CheckForOverflowUnderflow>
     <ConfigurationOverrideFile>
     </ConfigurationOverrideFile>
-    <DefineConstants>TRACE</DefineConstants>
+    <DefineConstants>TRACE;DOTNET;FRAMEWORK_3_5_OR_ABOVE</DefineConstants>
     <DocumentationFile>
     </DocumentationFile>
     <DebugSymbols>true</DebugSymbols>