diff --git a/arduino-ide-extension/src/browser/style/arduino-select.css b/arduino-ide-extension/src/browser/style/arduino-select.css
index b456c933..3d7ba1d4 100644
--- a/arduino-ide-extension/src/browser/style/arduino-select.css
+++ b/arduino-ide-extension/src/browser/style/arduino-select.css
@@ -8,7 +8,6 @@
 }
 
 .arduino-select__control--is-focused {
-    border-color: var(--theia-accent-color3) !important;
     box-shadow: none !important;
 }