diff --git a/modules/programs/pimsync/default.nix b/modules/programs/pimsync/default.nix
index 40092c47..e90695cb 100644
--- a/modules/programs/pimsync/default.nix
+++ b/modules/programs/pimsync/default.nix
@@ -119,7 +119,7 @@
       contactLocalStorageDirs = lib.mapAttrsToList localStorageDir contactAccounts;
       localStorageDirs = calendarLocalStorageDirs ++ contactLocalStorageDirs;
 
-      mkTmpFileRule = (dir: "d ${dir} 0755 ${config.home.username} ${config.home.username} - -");
+      mkTmpFileRule = (dir: "d ${dir} 0750 ${config.home.username} users - -");
       tmpFileRules = map mkTmpFileRule localStorageDirs;
     in
     lib.mkIf cfg.enable {