diff --git a/arduino-ide-extension/src/browser/arduino-frontend-module.ts b/arduino-ide-extension/src/browser/arduino-frontend-module.ts
index 1a40d0c5..77cb7631 100644
--- a/arduino-ide-extension/src/browser/arduino-frontend-module.ts
+++ b/arduino-ide-extension/src/browser/arduino-frontend-module.ts
@@ -36,6 +36,8 @@ import { SilentProblemContribution } from './customization/silent-problem-contri
 import { SilentNavigatorContribution } from './customization/silent-navigator-contribution';
 import { FileNavigatorContribution } from '@theia/navigator/lib/browser/navigator-contribution';
 import { ArduinoToolbarContribution } from './toolbar/arduino-toolbar-contribution';
+import { OutputToolbarContribution } from '@theia/output/lib/browser/output-toolbar-contribution';
+import { ArduinoOutputToolContribution } from './tool-output/arduino-output-tool-contribution';
 
 export default new ContainerModule((bind: interfaces.Bind, unbind: interfaces.Unbind, isBound: interfaces.IsBound, rebind: interfaces.Rebind) => {
     // Commands and toolbar items
@@ -115,4 +117,6 @@ export default new ContainerModule((bind: interfaces.Bind, unbind: interfaces.Un
 
     unbind(FileNavigatorContribution);
     bind(FileNavigatorContribution).to(SilentNavigatorContribution).inSingletonScope();
+    unbind(OutputToolbarContribution);
+    bind(OutputToolbarContribution).to(ArduinoOutputToolContribution).inSingletonScope();
 });
diff --git a/arduino-ide-extension/src/browser/style/main.css b/arduino-ide-extension/src/browser/style/main.css
index 151af68c..21e967d4 100644
--- a/arduino-ide-extension/src/browser/style/main.css
+++ b/arduino-ide-extension/src/browser/style/main.css
@@ -41,5 +41,19 @@
 }
 
 .arduino-tool-item.item.connected-boards  select {
-    background: var(--theia-layout-color0);
+    line-height: var(--theia-content-line-height);
+    font-size: var(--theia-ui-font-size1);
+    color: var(--theia-ui-font-color1);
+    -webkit-appearance: none;
+    -moz-appearance: none;
+    background-image: linear-gradient(45deg, transparent 50%, var(--theia-ui-font-color1) 50%), linear-gradient(135deg, var(--theia-ui-font-color1) 50%, transparent 50%);
+    background-position: calc(100% - 6px) 8px, calc(100% - 2px) 8px, 100% 0;
+    background-size: 4px 5px;
+    background-repeat: no-repeat;
+    padding-left: 3px;
+    padding-right: 15px;
+}
+
+.p-Widget.p-TabBar.theia-app-centers.theia-app-bottom .p-TabBar-content-container.ps {
+    display: none;
 }
\ No newline at end of file
diff --git a/arduino-ide-extension/src/browser/tool-output/arduino-output-tool-contribution.ts b/arduino-ide-extension/src/browser/tool-output/arduino-output-tool-contribution.ts
new file mode 100644
index 00000000..84e37186
--- /dev/null
+++ b/arduino-ide-extension/src/browser/tool-output/arduino-output-tool-contribution.ts
@@ -0,0 +1,10 @@
+import { OutputToolbarContribution } from "@theia/output/lib/browser/output-toolbar-contribution";
+import { TabBarToolbarRegistry } from "@theia/core/lib/browser/shell/tab-bar-toolbar";
+import { injectable } from "inversify";
+
+@injectable()
+export class ArduinoOutputToolContribution extends OutputToolbarContribution {
+    async registerToolbarItems(toolbarRegistry: TabBarToolbarRegistry): Promise<void> {
+        // register nothing
+    }
+}
\ No newline at end of file