diff --git a/nixos/modules/services/security/clamav.nix b/nixos/modules/services/security/clamav.nix
index b3af4d85cc4..04b433f8f2b 100644
--- a/nixos/modules/services/security/clamav.nix
+++ b/nixos/modules/services/security/clamav.nix
@@ -137,6 +137,7 @@ in
       serviceConfig = {
         Type = "oneshot";
         ExecStart = "${pkg}/bin/freshclam";
+        SuccessExitStatus = "1"; # if databases are up to date
         PrivateTmp = "yes";
         PrivateDevices = "yes";
       };