diff --git a/pkgs/by-name/si/signal-desktop/package.nix b/pkgs/by-name/si/signal-desktop/package.nix
index 9d19091a03c8..17de2fb08510 100644
--- a/pkgs/by-name/si/signal-desktop/package.nix
+++ b/pkgs/by-name/si/signal-desktop/package.nix
@@ -279,8 +279,9 @@ stdenv.mkDerivation (finalAttrs: {
       --add-flags ${lib.escapeShellArg commandLineArgs}
   ''
   + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
-    mkdir -p $out/share
+    mkdir -p $out/share/polkit-1/actions
     cp -r dist/*-unpacked/resources $out/share/signal-desktop
+    mv $out/share/signal-desktop/*.policy $out/share/polkit-1/actions/
 
     for icon in build/icons/png/*
     do