diff --git a/src/Shared/HandyControl_Shared/Tools/Helper/WindowHelper.cs b/src/Shared/HandyControl_Shared/Tools/Helper/WindowHelper.cs
index 33b591e2..d432abd0 100644
--- a/src/Shared/HandyControl_Shared/Tools/Helper/WindowHelper.cs
+++ b/src/Shared/HandyControl_Shared/Tools/Helper/WindowHelper.cs
@@ -139,9 +139,9 @@ namespace HandyControl.Tools
                 return WindowResizeBorderThickness.Add(new Thickness(autoHide ? -8 : 0));
 #elif NETCOREAPP
                 var hdc = InteropMethods.GetDC(IntPtr.Zero);
-                var scale = InteropMethods.GetDeviceCaps(hdc, InteropValues.DESKTOPVERTRES) / (float)InteropMethods.GetDeviceCaps(hdc, InteropValues.VERTRES);
+                var scale = InteropMethods.GetDeviceCaps(hdc, InteropValues.DESKTOPVERTRES) / (float) InteropMethods.GetDeviceCaps(hdc, InteropValues.VERTRES);
                 InteropMethods.ReleaseDC(IntPtr.Zero, hdc);
-                return WindowResizeBorderThickness.Add(new Thickness((autoHide ? - 4 : 4) * scale));
+                return WindowResizeBorderThickness.Add(new Thickness((autoHide ? -4 : 4) * scale));
 #else
                 return WindowResizeBorderThickness.Add(new Thickness(autoHide ? -4 : 4));
 #endif