diff --git a/.gitignore b/.gitignore
index 1647f40..eb718cc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
-DefectRand.exe
+*.exe
 !dist/DefectRand.exe
+!dist/DefectRand_net2.0.exe
diff --git a/Makefile b/Makefile
index 8277192..861b078 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,16 @@
 CS=csc /nologo
 TARGET=DefectRand.exe
 
+CS2=C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc /nologo
+TARGET2=DefectRand_net2.0.exe
+
+all: DefectRand.exe
+
 DefectRand.exe:
-	$(CS) /out:DefectRand.exe /t:winexe main.cs AssemblyInfo.cs /win32icon:app.ico
+	$(CS) /out:$(TARGET) /t:winexe main.cs AssemblyInfo.cs /win32icon:app.ico
+
+NET2:
+	$(CS2) /out:$(TARGET2) /t:winexe main.cs AssemblyInfo.cs /win32icon:app.ico
+
+clean:
+	del DefectRand.exe DefectRand_net2.0.exe
diff --git a/README.md b/README.md
index 6e2f1a2..7364db3 100644
--- a/README.md
+++ b/README.md
@@ -3,4 +3,5 @@
   
 ![Screen](https://raw.githubusercontent.com/iiiypuk/DefectRand/master/screen.png) 
 
-[[Скачать](https://raw.githubusercontent.com/iiiypuk/DefectRand/master/dist/DefectRand.exe)]
+[[Скачать .NET 4](https://raw.githubusercontent.com/iiiypuk/DefectRand/master/dist/DefectRand.exe)]
+[[Скачать .NET 2](https://raw.githubusercontent.com/iiiypuk/DefectRand/master/dist/DefectRand_net2.0.exe)]
diff --git a/dist/DefectRand.exe b/dist/DefectRand.exe
index cadbffa..5c5d855 100644
Binary files a/dist/DefectRand.exe and b/dist/DefectRand.exe differ
diff --git a/dist/DefectRand_net2.0.exe b/dist/DefectRand_net2.0.exe
new file mode 100644
index 0000000..9599db9
Binary files /dev/null and b/dist/DefectRand_net2.0.exe differ
diff --git a/main.cs b/main.cs
index efc1499..4daf3cb 100644
--- a/main.cs
+++ b/main.cs
@@ -1,6 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using System.Windows.Forms;
 
 namespace DefectRand