diff --git a/packages/web/src/TabsPanel.js b/packages/web/src/TabsPanel.js
index 22f9f0175..812eb14a5 100644
--- a/packages/web/src/TabsPanel.js
+++ b/packages/web/src/TabsPanel.js
@@ -160,6 +160,7 @@ export default function TabsPanel() {
   const closeOthers = closeTabFunc((x, active) => x.tabid != active.tabid);
   const handleMouseUp = (e, tabid) => {
     if (e.button == 1) {
+      e.preventDefault();
       closeTab(tabid);
     }
   };