diff --git a/build/win32/vs10/test-conformance-clutter.vcxprojin b/build/win32/vs10/test-conformance-clutter.vcxprojin
index be31e13ea..f8d923a83 100644
--- a/build/win32/vs10/test-conformance-clutter.vcxprojin
+++ b/build/win32/vs10/test-conformance-clutter.vcxprojin
@@ -71,7 +71,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>_DEBUG;COGL_ENABLE_EXPERIMENTAL_API;$(TestProgDef);%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_DEBUG;COGL_ENABLE_EXPERIMENTAL_API;CLUTTER_ENABLE_EXPERIMENTAL_API;$(TestProgDef);%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -90,7 +90,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
       <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>_DEBUG;COGL_ENABLE_EXPERIMENTAL_API;$(TestProgDef);%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_DEBUG;COGL_ENABLE_EXPERIMENTAL_API;CLUTTER_ENABLE_EXPERIMENTAL_API;$(TestProgDef);%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
@@ -114,7 +114,7 @@
     <ClCompile>
       <Optimization>MaxSpeed</Optimization>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>COGL_ENABLE_EXPERIMENTAL_API;$(TestProgDef);%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>COGL_ENABLE_EXPERIMENTAL_API;CLUTTER_ENABLE_EXPERIMENTAL_API;$(TestProgDef);%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <PrecompiledHeader>
@@ -133,7 +133,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
-      <PreprocessorDefinitions>COGL_ENABLE_EXPERIMENTAL_API;$(TestProgDef);%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>COGL_ENABLE_EXPERIMENTAL_API;CLUTTER_ENABLE_EXPERIMENTAL_API;$(TestProgDef);%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <PrecompiledHeader>
       </PrecompiledHeader>
diff --git a/build/win32/vs9/test-conformance-clutter.vcprojin b/build/win32/vs9/test-conformance-clutter.vcprojin
index 036936330..673c54c09 100644
--- a/build/win32/vs9/test-conformance-clutter.vcprojin
+++ b/build/win32/vs9/test-conformance-clutter.vcprojin
@@ -31,7 +31,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				PreprocessorDefinitions="_DEBUG;COGL_ENABLE_EXPERIMENTAL_API;$(TestProgDef)"
+				PreprocessorDefinitions="_DEBUG;COGL_ENABLE_EXPERIMENTAL_API;CLUTTER_ENABLE_EXPERIMENTAL_API;$(TestProgDef)"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
@@ -60,7 +60,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				PreprocessorDefinitions="_DEBUG;COGL_ENABLE_EXPERIMENTAL_API;$(TestProgDef)"
+				PreprocessorDefinitions="_DEBUG;COGL_ENABLE_EXPERIMENTAL_API;CLUTTER_ENABLE_EXPERIMENTAL_API;$(TestProgDef)"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
@@ -94,7 +94,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="2"
 				EnableIntrinsicFunctions="true"
-				PreprocessorDefinitions="COGL_ENABLE_EXPERIMENTAL_API;$(TestProgDef)"
+				PreprocessorDefinitions="COGL_ENABLE_EXPERIMENTAL_API;CLUTTER_ENABLE_EXPERIMENTAL_API;$(TestProgDef)"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="true"
 				UsePrecompiledHeader="0"
@@ -124,7 +124,7 @@
 			/>
 			<Tool
 				Name="VCCLCompilerTool"
-				PreprocessorDefinitions="COGL_ENABLE_EXPERIMENTAL_API;$(TestProgDef)"
+				PreprocessorDefinitions="COGL_ENABLE_EXPERIMENTAL_API;CLUTTER_ENABLE_EXPERIMENTAL_API;$(TestProgDef)"
 				RuntimeLibrary="2"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"