diff --git a/FValidator.sln b/FValidator.sln
index c979f6b..651f353 100644
--- a/FValidator.sln
+++ b/FValidator.sln
@@ -1,7 +1,4 @@
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Express 2013 for Windows Desktop
-VisualStudioVersion = 12.0.40629.0
-MinimumVisualStudioVersion = 10.0.40219.1
+Microsoft Visual Studio Solution File, Format Version 9.00
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OTFontFile", "OTFontFile\OTFontFile.csproj", "{2E80C9CA-7EA9-4855-A924-1EDF63728DF4}"
 	ProjectSection(ProjectDependencies) = postProject
 	EndProjectSection