diff --git a/build/win32/vs10/install.vcxproj b/build/win32/vs10/install.vcxproj
index 63a395551..c378e2f5f 100644
--- a/build/win32/vs10/install.vcxproj
+++ b/build/win32/vs10/install.vcxproj
@@ -52,18 +52,22 @@
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="glib-install.props" />
+    <Import Project="glib-build-defines.props" />
   </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="glib-install.props" />
+    <Import Project="glib-build-defines.props" />
   </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="glib-install.props" />
+    <Import Project="glib-build-defines.props" />
   </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="glib-install.props" />
+    <Import Project="glib-build-defines.props" />
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup>
diff --git a/build/win32/vs9/install.vcproj b/build/win32/vs9/install.vcproj
index 6d0161d6f..d9876dcfd 100644
--- a/build/win32/vs9/install.vcproj
+++ b/build/win32/vs9/install.vcproj
@@ -21,7 +21,7 @@
 	<Configurations>
 		<Configuration
 			Name="Debug|Win32"
-			InheritedPropertySheets=".\glib-install.vsprops"
+			InheritedPropertySheets=".\glib-install.vsprops;.\glib-build-defines.vsprops"
 			OutputDirectory="$(GlibEtcInstallRoot)"
 			ConfigurationType="10"
 			CharacterSet="2"
@@ -34,7 +34,7 @@
 		</Configuration>
 		<Configuration
 			Name="Debug|x64"
-			InheritedPropertySheets=".\glib-install.vsprops"
+			InheritedPropertySheets=".\glib-install.vsprops;.\glib-build-defines.vsprops"
 			OutputDirectory="$(GlibEtcInstallRoot)"
 			ConfigurationType="10"
 			CharacterSet="2"
@@ -47,7 +47,7 @@
 		</Configuration>
 		<Configuration
 			Name="Release|Win32"
-			InheritedPropertySheets=".\glib-install.vsprops"
+			InheritedPropertySheets=".\glib-install.vsprops;.\glib-build-defines.vsprops"
 			OutputDirectory="$(GlibEtcInstallRoot)"
 			ConfigurationType="10"
 			CharacterSet="2"
@@ -61,7 +61,7 @@
 		</Configuration>
 		<Configuration
 			Name="Release|x64"
-			InheritedPropertySheets=".\glib-install.vsprops"
+			InheritedPropertySheets=".\glib-install.vsprops;.\glib-build-defines.vsprops"
 			OutputDirectory="$(GlibEtcInstallRoot)"
 			ConfigurationType="10"
 			CharacterSet="2"