diff --git a/Source/NotifyIconWpf.sln b/Source/NotifyIconWpf.sln
index 6e727f2..e188016 100644
--- a/Source/NotifyIconWpf.sln
+++ b/Source/NotifyIconWpf.sln
@@ -14,6 +14,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Sample Project", "Sample Pr
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WindowsFormsSample", "WindowsFormsSample\WindowsFormsSample.csproj", "{F6DC0A6D-D1CE-4AD2-92ED-08FFF0AD4FA8}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Windowless Sample", "Windowless Sample\Windowless Sample.csproj", "{964EBFBE-A600-49B2-BDD8-422B46F1D544}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -32,6 +34,10 @@ Global
 		{F6DC0A6D-D1CE-4AD2-92ED-08FFF0AD4FA8}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{F6DC0A6D-D1CE-4AD2-92ED-08FFF0AD4FA8}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{F6DC0A6D-D1CE-4AD2-92ED-08FFF0AD4FA8}.Release|Any CPU.Build.0 = Release|Any CPU
+		{964EBFBE-A600-49B2-BDD8-422B46F1D544}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{964EBFBE-A600-49B2-BDD8-422B46F1D544}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{964EBFBE-A600-49B2-BDD8-422B46F1D544}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{964EBFBE-A600-49B2-BDD8-422B46F1D544}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE