diff --git a/PipeGallery/Converter/DistanceConverter.cs b/PipeGallery/Converter/DistanceConverter.cs
index f2d9ce8..a2d6ff9 100644
--- a/PipeGallery/Converter/DistanceConverter.cs
+++ b/PipeGallery/Converter/DistanceConverter.cs
@@ -1,27 +1,23 @@
-
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
+using System;
+using System.Globalization;
 using System.Windows.Data;
 
 namespace PipeGallery.Converter
 {
     public class DistanceConverter : IMultiValueConverter
     {
-        public object Convert(object[] value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+        public object Convert(object[] value, Type targetType, object parameter, CultureInfo culture)
         {
             if (value.Length == 3)
             {
-
-                double d0 = (double)value[0];
-                double d1 = (double)value[1];
-                double d2 = (double)value[2];
+                double d0 = (double) value[0];
+                double d1 = (double) value[1];
+                double d2 = (double) value[2];
 
                 double d3 = d2 * d0 / d1;
 
                 int p = System.Convert.ToInt32(parameter);
-                if (p==1)
+                if (p == 1)
                 {
                     d3 = d3 + 6;
                 }
@@ -29,16 +25,14 @@
                 {
                     d3 = d3 - 75;
                 }
-
                 return d3;
             }
-
             return null;
         }
 
-        public object[] ConvertBack(object value, Type[] targetType, object parameter, System.Globalization.CultureInfo culture)
+        public object[] ConvertBack(object value, Type[] targetType, object parameter, CultureInfo culture)
         {
             throw new NotImplementedException();
         }
     }
-}
+}
\ No newline at end of file