diff --git a/EthernetSwitcher/EthernetSwitcherService.cs b/EthernetSwitcher/EthernetSwitcherService.cs
index 689005d..098ccc8 100644
--- a/EthernetSwitcher/EthernetSwitcherService.cs
+++ b/EthernetSwitcher/EthernetSwitcherService.cs
@@ -38,11 +38,13 @@ namespace EthernetSwitcher
             switch (newMode)
             {
                 case EthernetMode.Primary:
+                    DeselectInterface(settings.SecondaryName);
                     SelectInterface(settings.PrimaryName);
                     UpdateIconFromResource("icon_yellow.ico");
                     break;
                     
                 case EthernetMode.Secondary:
+                    DeselectInterface(settings.PrimaryName);
                     SelectInterface(settings.SecondaryName);
                     UpdateIconFromResource("icon_yellow.ico");
                     break;
@@ -71,11 +73,13 @@ namespace EthernetSwitcher
                     switch (settings.Mode)
                     {
                         case EthernetMode.Primary:
+                            DeselectInterface(settings.SecondaryName);
                             SelectInterface(settings.PrimaryName);
                             UpdateIconFromResource("icon_yellow.ico");
                             break;
                             
                         case EthernetMode.Secondary:
+                            DeselectInterface(settings.PrimaryName);
                             SelectInterface(settings.SecondaryName);
                             UpdateIconFromResource("icon_yellow.ico");
                             break;