diff --git a/build/win32/vs10/gtk3-demo.vcxproj b/build/win32/vs10/gtk3-demo.vcxproj
index f870a6e26d..fed8cc32ea 100644
--- a/build/win32/vs10/gtk3-demo.vcxproj
+++ b/build/win32/vs10/gtk3-demo.vcxproj
@@ -190,6 +190,7 @@
     <ClCompile Include="..\..\..\demos\gtk-demo\event_axes.c" />
     <ClCompile Include="..\..\..\demos\gtk-demo\expander.c" />
     <ClCompile Include="..\..\..\demos\gtk-demo\gestures.c" />
+    <ClCompile Include="..\..\..\demos\gtk-demo\glarea.c" />
     <ClCompile Include="..\..\..\demos\gtk-demo\headerbar.c" />
     <ClCompile Include="..\..\..\demos\gtk-demo\hypertext.c" />
     <ClCompile Include="..\..\..\demos\gtk-demo\iconview.c" />
@@ -213,6 +214,7 @@
     <ClCompile Include="..\..\..\demos\gtk-demo\rotated_text.c" />
     <ClCompile Include="..\..\..\demos\gtk-demo\search_entry.c" />
     <ClCompile Include="..\..\..\demos\gtk-demo\search_entry2.c" />
+    <ClCompile Include="..\..\..\demos\gtk-demo\sidebar.c" />
     <ClCompile Include="..\..\..\demos\gtk-demo\sizegroup.c" />
     <ClCompile Include="..\..\..\demos\gtk-demo\spinner.c" />
     <ClCompile Include="..\..\..\demos\gtk-demo\stack.c" />
diff --git a/build/win32/vs10/gtk3-demo.vcxproj.filters b/build/win32/vs10/gtk3-demo.vcxproj.filters
index 745f00d492..42262854d0 100644
--- a/build/win32/vs10/gtk3-demo.vcxproj.filters
+++ b/build/win32/vs10/gtk3-demo.vcxproj.filters
@@ -32,6 +32,7 @@
     <ClCompile Include="..\..\..\demos\gtk-demo\event_axes.c"><Filter>Source Files</Filter></ClCompile>
     <ClCompile Include="..\..\..\demos\gtk-demo\expander.c"><Filter>Source Files</Filter></ClCompile>
     <ClCompile Include="..\..\..\demos\gtk-demo\gestures.c"><Filter>Source Files</Filter></ClCompile>
+    <ClCompile Include="..\..\..\demos\gtk-demo\glarea.c"><Filter>Source Files</Filter></ClCompile>
     <ClCompile Include="..\..\..\demos\gtk-demo\headerbar.c"><Filter>Source Files</Filter></ClCompile>
     <ClCompile Include="..\..\..\demos\gtk-demo\hypertext.c"><Filter>Source Files</Filter></ClCompile>
     <ClCompile Include="..\..\..\demos\gtk-demo\iconview.c"><Filter>Source Files</Filter></ClCompile>
@@ -55,6 +56,7 @@
     <ClCompile Include="..\..\..\demos\gtk-demo\rotated_text.c"><Filter>Source Files</Filter></ClCompile>
     <ClCompile Include="..\..\..\demos\gtk-demo\search_entry.c"><Filter>Source Files</Filter></ClCompile>
     <ClCompile Include="..\..\..\demos\gtk-demo\search_entry2.c"><Filter>Source Files</Filter></ClCompile>
+    <ClCompile Include="..\..\..\demos\gtk-demo\sidebar.c"><Filter>Source Files</Filter></ClCompile>
     <ClCompile Include="..\..\..\demos\gtk-demo\sizegroup.c"><Filter>Source Files</Filter></ClCompile>
     <ClCompile Include="..\..\..\demos\gtk-demo\spinner.c"><Filter>Source Files</Filter></ClCompile>
     <ClCompile Include="..\..\..\demos\gtk-demo\stack.c"><Filter>Source Files</Filter></ClCompile>
diff --git a/build/win32/vs9/gtk3-demo.vcproj b/build/win32/vs9/gtk3-demo.vcproj
index 5c239db705..21f14bee5c 100644
--- a/build/win32/vs9/gtk3-demo.vcproj
+++ b/build/win32/vs9/gtk3-demo.vcproj
@@ -181,6 +181,7 @@
 			<File RelativePath="..\..\..\demos\gtk-demo\event_axes.c" />
 			<File RelativePath="..\..\..\demos\gtk-demo\expander.c" />
 			<File RelativePath="..\..\..\demos\gtk-demo\gestures.c" />
+			<File RelativePath="..\..\..\demos\gtk-demo\glarea.c" />
 			<File RelativePath="..\..\..\demos\gtk-demo\headerbar.c" />
 			<File RelativePath="..\..\..\demos\gtk-demo\hypertext.c" />
 			<File RelativePath="..\..\..\demos\gtk-demo\iconview.c" />
@@ -204,6 +205,7 @@
 			<File RelativePath="..\..\..\demos\gtk-demo\rotated_text.c" />
 			<File RelativePath="..\..\..\demos\gtk-demo\search_entry.c" />
 			<File RelativePath="..\..\..\demos\gtk-demo\search_entry2.c" />
+			<File RelativePath="..\..\..\demos\gtk-demo\sidebar.c" />
 			<File RelativePath="..\..\..\demos\gtk-demo\sizegroup.c" />
 			<File RelativePath="..\..\..\demos\gtk-demo\spinner.c" />
 			<File RelativePath="..\..\..\demos\gtk-demo\stack.c" />