diff --git a/vcnet/fltk.lib.vcproj b/vcnet/fltk.lib.vcproj
index 0aacac964..256d0bb8b 100644
--- a/vcnet/fltk.lib.vcproj
+++ b/vcnet/fltk.lib.vcproj
@@ -1675,6 +1675,26 @@
 					PreprocessorDefinitions=""/>
 			</FileConfiguration>
 		</File>
+		<File
+			RelativePath="..\src\fl_gtk.cxx">
+			<FileConfiguration
+				Name="Debug|Win32">
+				<Tool
+					Name="VCCLCompilerTool"
+					Optimization="0"
+					AdditionalIncludeDirectories=""
+					PreprocessorDefinitions=""
+					BrowseInformation="1"/>
+			</FileConfiguration>
+			<FileConfiguration
+				Name="Release|Win32">
+				<Tool
+					Name="VCCLCompilerTool"
+					FavorSizeOrSpeed="0"
+					AdditionalIncludeDirectories=""
+					PreprocessorDefinitions=""/>
+			</FileConfiguration>
+		</File>
 		<File
 			RelativePath="..\src\Fl_Positioner.cxx">
 			<FileConfiguration
diff --git a/vcnet/fltkdll.vcproj b/vcnet/fltkdll.vcproj
index ad180ea66..a6e3e99f9 100644
--- a/vcnet/fltkdll.vcproj
+++ b/vcnet/fltkdll.vcproj
@@ -1694,6 +1694,24 @@
 					PreprocessorDefinitions="FL_DLL;FL_LIBRARY;WIN32;_DEBUG;_WINDOWS;WIN32_LEAN_AND_MEAN;VC_EXTRA_LEAN;WIN32_EXTRA_LEAN;$(NoInherit)"/>
 			</FileConfiguration>
 		</File>
+		<File
+			RelativePath="..\src\fl_gtk.cxx">
+			<FileConfiguration
+				Name="Release|Win32">
+				<Tool
+					Name="VCCLCompilerTool"
+					AdditionalIncludeDirectories=""
+					PreprocessorDefinitions="FL_DLL;FL_LIBRARY;WIN32;NDEBUG;_WINDOWS;WIN32_LEAN_AND_MEAN;VC_EXTRA_LEAN;WIN32_EXTRA_LEAN;$(NoInherit)"/>
+			</FileConfiguration>
+			<FileConfiguration
+				Name="Debug|Win32">
+				<Tool
+					Name="VCCLCompilerTool"
+					Optimization="0"
+					AdditionalIncludeDirectories=""
+					PreprocessorDefinitions="FL_DLL;FL_LIBRARY;WIN32;_DEBUG;_WINDOWS;WIN32_LEAN_AND_MEAN;VC_EXTRA_LEAN;WIN32_EXTRA_LEAN;$(NoInherit)"/>
+			</FileConfiguration>
+		</File>
 		<File
 			RelativePath="..\src\Fl_PNG_Image.cxx">
 			<FileConfiguration