diff --git a/oni/home/config/rincewind.scm b/oni/home/config/rincewind.scm
index b430876..5287828 100644
--- a/oni/home/config/rincewind.scm
+++ b/oni/home/config/rincewind.scm
@@ -563,4 +563,6 @@
                 ("privacy.resistFingerprinting" #f)
                 ;; Change the accelerator key (modifier key for most keyboard
                 ;; shortcuts) to the super key (from control).
-                ("ui.key.accelKey" 91))))))))
+                ("ui.key.accelKey" 91)
+                ("browser.tabs.hoverPreview.enabled" #f)
+                ("browser.tabs.hoverPreview.showThumbnails" #f))))))))