diff --git a/SimpleToolkit.Extensions.sln b/SimpleToolkit.Extensions.sln
new file mode 100644
index 0000000..715ea78
--- /dev/null
+++ b/SimpleToolkit.Extensions.sln
@@ -0,0 +1,16 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SimpleToolkit.Extensions", "SimpleToolkit.Extensions\SimpleToolkit.Extensions.csproj", "{6D174E00-25BB-4E29-F2DA-041331660D09}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{6D174E00-25BB-4E29-F2DA-041331660D09}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6D174E00-25BB-4E29-F2DA-041331660D09}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6D174E00-25BB-4E29-F2DA-041331660D09}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6D174E00-25BB-4E29-F2DA-041331660D09}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal
diff --git a/SimpleToolkit.Extensions.slnx b/SimpleToolkit.Extensions.slnx
deleted file mode 100644
index b452b5c..0000000
--- a/SimpleToolkit.Extensions.slnx
+++ /dev/null
@@ -1,3 +0,0 @@
-<Solution>
-  <Project Path="SimpleToolkit.Extensions/SimpleToolkit.Extensions.csproj" />
-</Solution>