diff --git a/internal/exec/stages/files/units.go b/internal/exec/stages/files/units.go
index d690f0547..1c427f6b9 100644
--- a/internal/exec/stages/files/units.go
+++ b/internal/exec/stages/files/units.go
@@ -45,7 +45,7 @@ func (s *stage) warnOnOldSystemdVersion() error {
 		return err
 	}
 	if systemdVersion < 240 {
-		s.Warning("The version of systemd (%q) is less than 240. Enabling/disabling instantiated units may not work. See https://github.com/coreos/ignition/issues/586 for more information.", systemdVersion)
+		s.Warning("The version of systemd (%d) is less than 240. Enabling/disabling instantiated units may not work. See https://github.com/coreos/ignition/issues/586 for more information.", systemdVersion)
 	}
 	return nil
 }