diff --git a/module.nix b/module.nix
index 1a2879e..dbc4bfd 100644
--- a/module.nix
+++ b/module.nix
@@ -70,7 +70,7 @@ in {
         ];
         Restart = "on-failure";
         RestartSec = 5;
-        UMask = "077";
+        UMask = 007;
 
         RuntimeDirectory = "matrixoidc";
         RuntimeDirectoryMode = 0770;