diff --git a/dlangui.sln b/dlangui.sln
index 6e2d0bcc..7346fdb4 100644
--- a/dlangui.sln
+++ b/dlangui.sln
@@ -1,6 +1,8 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2012
+# Visual Studio 2013
+VisualStudioVersion = 12.0.30723.0
+MinimumVisualStudioVersion = 10.0.40219.1
 Project("{002A2DE9-8BB6-484D-9802-7E4AD4084715}") = "dlangui", "dlanguilib.visualdproj", "{5FF17402-9997-4D0E-8068-6D84B8769D98}"
 EndProject
 Project("{002A2DE9-8BB6-484D-9802-7E4AD4084715}") = "example1", "examples\example1\example1.visualdproj", "{68C78CC1-6176-4C60-B4B6-520475C26D23}"
@@ -8,7 +10,9 @@ Project("{002A2DE9-8BB6-484D-9802-7E4AD4084715}") = "example1", "examples\exampl
 		{5FF17402-9997-4D0E-8068-6D84B8769D98} = {5FF17402-9997-4D0E-8068-6D84B8769D98}
 	EndProjectSection
 EndProject
-Project("{002A2DE9-8BB6-484D-9802-7E4AD4084715}") = "Failed to load example2", "examples\example2\example2.visualdproj", "{4B9651D1-BF43-47BD-9FA4-B1DAF9E7197D}"
+Project("{002A2DE9-8BB6-484D-9802-7E4AD4084715}") = "example2", "examples\example2\example2.visualdproj", "{4B9651D1-BF43-47BD-9FA4-B1DAF9E7197D}"
+EndProject
+Project("{002A2DE9-8BB6-484D-9802-7E4AD4084715}") = "helloworld", "examples\helloworld\helloworld.visualdproj", "{66B1B701-6AC9-41F5-8DB4-5CB1611FB977}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -28,6 +32,10 @@ Global
 		{4B9651D1-BF43-47BD-9FA4-B1DAF9E7197D}.Debug|Win32.Build.0 = Debug|Win32
 		{4B9651D1-BF43-47BD-9FA4-B1DAF9E7197D}.Release|Win32.ActiveCfg = Release|Win32
 		{4B9651D1-BF43-47BD-9FA4-B1DAF9E7197D}.Release|Win32.Build.0 = Release|Win32
+		{66B1B701-6AC9-41F5-8DB4-5CB1611FB977}.Debug|Win32.ActiveCfg = Debug|Win32
+		{66B1B701-6AC9-41F5-8DB4-5CB1611FB977}.Debug|Win32.Build.0 = Debug|Win32
+		{66B1B701-6AC9-41F5-8DB4-5CB1611FB977}.Release|Win32.ActiveCfg = Release|Win32
+		{66B1B701-6AC9-41F5-8DB4-5CB1611FB977}.Release|Win32.Build.0 = Release|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/dlanguilib.visualdproj b/dlanguilib.visualdproj
index 058132fa..a0cfafff 100644
--- a/dlanguilib.visualdproj
+++ b/dlanguilib.visualdproj
@@ -107,7 +107,7 @@
   <verbose>0</verbose>
   <vtls>0</vtls>
   <symdebug>0</symdebug>
-  <optimize>0</optimize>
+  <optimize>1</optimize>
   <cpu>0</cpu>
   <isX86_64>0</isX86_64>
   <isLinux>0</isLinux>
diff --git a/examples/example1/example1.visualdproj b/examples/example1/example1.visualdproj
index 78cf95b2..e512f911 100644
--- a/examples/example1/example1.visualdproj
+++ b/examples/example1/example1.visualdproj
@@ -107,7 +107,7 @@
   <verbose>0</verbose>
   <vtls>0</vtls>
   <symdebug>0</symdebug>
-  <optimize>0</optimize>
+  <optimize>1</optimize>
   <cpu>0</cpu>
   <isX86_64>0</isX86_64>
   <isLinux>0</isLinux>