diff --git a/modules/lock/LockSurface.qml b/modules/lock/LockSurface.qml
index b4fdae5..e377e89 100644
--- a/modules/lock/LockSurface.qml
+++ b/modules/lock/LockSurface.qml
@@ -10,7 +10,7 @@ WlSessionLockSurface {
     required property WlSessionLock lock
     required property LockAuth auth
 
-    color: "transparent"
+    color: M.Theme.base00
 
     // Blur screenshot of desktop as background
     ScreencopyView {