diff --git a/modules/services/picom.nix b/modules/services/picom.nix
index 1b0b863..53b565c 100644
--- a/modules/services/picom.nix
+++ b/modules/services/picom.nix
@@ -30,6 +30,9 @@ in
           glx-no-rebind-pixmap = true;
           glx-no-stencil = true;
 
+          # against flicker
+          unredir-if-possible = false;
+
           # fastest swap method
           glx-swap-method = 1;