diff --git a/win32/vs10/gtk3-build-defines.props b/win32/vs10/gtk3-build-defines.props
index 50c8cf6fbe..4fddda3189 100644
--- a/win32/vs10/gtk3-build-defines.props
+++ b/win32/vs10/gtk3-build-defines.props
@@ -12,7 +12,7 @@
     <GtkHostMachine Condition="'$(Platform)' == 'Win32'">i686</GtkHostMachine>
     <GtkHostMachine Condition="'$(Platform)' == 'x64'">x86_64</GtkHostMachine>
     <GtkHostMachine Condition="'$(Platform)' == 'arm64'">aarch64</GtkHostMachine>
-    <GtkDefines>GTK_COMPILATION;G_LOG_DOMAIN="Gtk";GTK_HOST="$(GtkHostMachine)-pc-vs$(VSVer)";GTK_PRINT_BACKENDS="file";GTK_PRINT_BACKEND_ENABLE_UNSUPPORTED;$(GtkIncludedImmodulesDefines);GTK_LIBDIR="$(GtkDummyPrefix)/lib";GTK_DATADIR="$(GtkDummyPrefix)/share";GTK_DATA_PREFIX="$(GtkDummyPrefix)";GTK_SYSCONFDIR="$(GtkDummyPrefix)/etc";MULTIPRESS_CONFDIR="$(GtkDummyPrefix)/etc/gtk-$(ApiVersion)";MULTIPRESS_LOCALEDIR="$(GtkDummyPrefix)/share/locale";GTK_VERSION="$(GtkVersion)/etc";GTK_BINARY_VERSION="$(GtkBinaryVersion)/etc";GDK_DISABLE_DEPRECATED;ISOLATION_AWARE_ENABLED</GtkDefines>
+    <GtkDefines>GTK_COMPILATION;G_LOG_DOMAIN="Gtk";GTK_HOST="$(GtkHostMachine)-pc-vs$(VSVer)";GTK_PRINT_BACKENDS="file";GTK_PRINT_BACKEND_ENABLE_UNSUPPORTED;$(GtkIncludedImmodulesDefines);GTK_LIBDIR="$(GtkDummyPrefix)/lib";GTK_DATADIR="$(GtkDummyPrefix)/share";GTK_DATA_PREFIX="$(GtkDummyPrefix)";GTK_SYSCONFDIR="$(GtkDummyPrefix)/etc";MULTIPRESS_CONFDIR="$(GtkDummyPrefix)/etc/gtk-$(ApiVersion)";MULTIPRESS_LOCALEDIR="$(GtkDummyPrefix)/share/locale";GTK_VERSION="$(GtkVersion)/etc";GTK_BINARY_VERSION="$(GtkBinaryVersion)/etc";GDK_DISABLE_DEPRECATED;ISOLATION_AWARE_ENABLED;__MSVC_PROJECTS__</GtkDefines>
     <CommonARM64SystemLibs Condition="'$(VisualStudioVersion)|$(Platform)' == '15.0|arm64'">ole32.lib;advapi32.lib;shell32.lib;gdi32.lib</CommonARM64SystemLibs>
     <GtkGdkCommonLibs>pangowin32-1.0.lib;fribidi.lib;imm32.lib;$(CommonARM64SystemLibs)</GtkGdkCommonLibs>
     <GdkAdditionalLibs>winmm.lib;dwmapi.lib;setupapi.lib;hid.lib;$(GtkGdkCommonLibs)</GdkAdditionalLibs>
diff --git a/win32/vs9/gtk3-build-defines.vsprops b/win32/vs9/gtk3-build-defines.vsprops
index e47c348063..876e2406cc 100644
--- a/win32/vs9/gtk3-build-defines.vsprops
+++ b/win32/vs9/gtk3-build-defines.vsprops
@@ -41,11 +41,11 @@
 	/>
 	<UserMacro
 		Name="GtkDefines"
-		Value="GTK_COMPILATION;G_LOG_DOMAIN=\&quot;Gtk\&quot;;GTK_HOST=\&quot;i686-pc-vs$(VSVer)\&quot;;GTK_PRINT_BACKENDS=\&quot;file\&quot;;GTK_PRINT_BACKEND_ENABLE_UNSUPPORTED;$(GtkIncludedImmodulesDefines);GTK_LIBDIR=\&quot;$(GtkDummyPrefix)/lib\&quot;;GTK_DATADIR=\&quot;$(GtkDummyPrefix)/share\&quot;GTK_DATA_PREFIX=\&quot;$(GtkDummyPrefix)\&quot;;GTK_SYSCONFDIR=\&quot;$(GtkDummyPrefix)/etc\&quot;;MULTIPRESS_CONFDIR=\&quot;$(GtkDummyPrefix)/etc/gtk-$(ApiVersion)\&quot;;MULTIPRESS_LOCALEDIR=\&quot;$(GtkDummyPrefix)/share/locale\&quot;;GTK_VERSION=\&quot;$(GtkVersion)/etc\&quot;;GTK_BINARY_VERSION=\&quot;$(GtkBinaryVersion)/etc\&quot;;GDK_DISABLE_DEPRECATED;ISOLATION_AWARE_ENABLED"
+		Value="GTK_COMPILATION;G_LOG_DOMAIN=\&quot;Gtk\&quot;;GTK_HOST=\&quot;i686-pc-vs$(VSVer)\&quot;;GTK_PRINT_BACKENDS=\&quot;file\&quot;;GTK_PRINT_BACKEND_ENABLE_UNSUPPORTED;$(GtkIncludedImmodulesDefines);GTK_LIBDIR=\&quot;$(GtkDummyPrefix)/lib\&quot;;GTK_DATADIR=\&quot;$(GtkDummyPrefix)/share\&quot;GTK_DATA_PREFIX=\&quot;$(GtkDummyPrefix)\&quot;;GTK_SYSCONFDIR=\&quot;$(GtkDummyPrefix)/etc\&quot;;MULTIPRESS_CONFDIR=\&quot;$(GtkDummyPrefix)/etc/gtk-$(ApiVersion)\&quot;;MULTIPRESS_LOCALEDIR=\&quot;$(GtkDummyPrefix)/share/locale\&quot;;GTK_VERSION=\&quot;$(GtkVersion)/etc\&quot;;GTK_BINARY_VERSION=\&quot;$(GtkBinaryVersion)/etc\&quot;;GDK_DISABLE_DEPRECATED;ISOLATION_AWARE_ENABLED;__MSVC_PROJECTS__"
 	/>
 	<UserMacro
 		Name="GtkDefinesX64"
-		Value="GTK_COMPILATION;G_LOG_DOMAIN=\&quot;Gtk\&quot;;GTK_HOST=\&quot;x86_64-pc-vs$(VSVer)\&quot;;GTK_PRINT_BACKENDS=\&quot;file\&quot;;GTK_PRINT_BACKEND_ENABLE_UNSUPPORTED;$(GtkIncludedImmodulesDefines);GTK_LIBDIR=\&quot;$(GtkDummyPrefix)/lib\&quot;;GTK_DATADIR=\&quot;$(GtkDummyPrefix)/share\&quot;GTK_DATA_PREFIX=\&quot;$(GtkDummyPrefix)\&quot;;GTK_SYSCONFDIR=\&quot;$(GtkDummyPrefix)/etc\&quot;;MULTIPRESS_CONFDIR=\&quot;$(GtkDummyPrefix)/etc/gtk-$(ApiVersion)\&quot;;MULTIPRESS_LOCALEDIR=\&quot;$(GtkDummyPrefix)/share/locale\&quot;;GTK_VERSION=\&quot;$(GtkVersion)/etc\&quot;;GTK_BINARY_VERSION=\&quot;$(GtkBinaryVersion)/etc\&quot;;GDK_DISABLE_DEPRECATED;ISOLATION_AWARE_ENABLED"
+		Value="GTK_COMPILATION;G_LOG_DOMAIN=\&quot;Gtk\&quot;;GTK_HOST=\&quot;x86_64-pc-vs$(VSVer)\&quot;;GTK_PRINT_BACKENDS=\&quot;file\&quot;;GTK_PRINT_BACKEND_ENABLE_UNSUPPORTED;$(GtkIncludedImmodulesDefines);GTK_LIBDIR=\&quot;$(GtkDummyPrefix)/lib\&quot;;GTK_DATADIR=\&quot;$(GtkDummyPrefix)/share\&quot;GTK_DATA_PREFIX=\&quot;$(GtkDummyPrefix)\&quot;;GTK_SYSCONFDIR=\&quot;$(GtkDummyPrefix)/etc\&quot;;MULTIPRESS_CONFDIR=\&quot;$(GtkDummyPrefix)/etc/gtk-$(ApiVersion)\&quot;;MULTIPRESS_LOCALEDIR=\&quot;$(GtkDummyPrefix)/share/locale\&quot;;GTK_VERSION=\&quot;$(GtkVersion)/etc\&quot;;GTK_BINARY_VERSION=\&quot;$(GtkBinaryVersion)/etc\&quot;;GDK_DISABLE_DEPRECATED;ISOLATION_AWARE_ENABLED;__MSVC_PROJECTS__"
 	/>
 	<UserMacro
 		Name="GtkGdkCommonLibs"